无缝、半无缝以及焊接钢管、以精密的机器制造工艺，独特的技术以及严格的质量管控流程，来确保产品品质。 Seamless,Semi-seamless and Welded tubes & pipes are manufacturing throughout state art of equipment, unique technologies and strict quality assurance process.
我们有多种专业的检验设备：扫描电子显微镜、能谱仪、粗糙度仪、粒子计数器、硬度计、露点仪、金相显微镜、拉力试验机等。 We have a variety of professional inspection equipment:Scanning Electron Microscope（SEM）,Energy Dispersive Spectroscopy（EDS）, Surface Roughness Gauge,Particle Counter,Micro Vickers,Moisture Analyzer,Metallography Microscope,Tensile Testing Machined etc.
不同的内部表面抛光技术获得不同等级的钢管。请参考我们提供的表面等级、化学成分表、物理性能、粒子供给实验及其他品质检验项目及标准、尺寸公差参数。 Tubes & Pipes are available with different inside diameter finish levels.Please refer to our offer surface grade、Chemical Composition、Physical Prorerties、Particle Contribution Test、Quality Sssurance Values、Dimension Tolerance.
超洁净管根据如下P/N进行下单 UHP Tubes/Pipes are ordered by part number as shown as right. T-S-12-1.24-4-E-316,代表无缝管，1/2“外径，1.24壁厚，长度4米，EP，材质316。 The following part number,T-S-12-1.24-4-E-316,is designated for seamless Tube,1/2"OD,1.24mm WT,4 meters per length,EP,grade of 316.
Mini Cylinder Pipe
Rodless Cylinder Pipe
High Pressure Pipe
Bright Annedled Clean Tube&Pipe
Electro Polished Clean Tube&Pipe
Chromatographic Column Tube
Customized Stainless Steel Tube&Pipes
Qualifications Of The Enterprise
本公司成立于2014年，专业生产高精密不锈钢管（气缸管、BA管、EP管、高压管）及其相关产品,
公司位于江苏省江阴市华士，南靠沿江高速公路，北临长江要塞，水陆交通十分便捷。
公司生产加工设备配置齐全，其中精密不锈钢管分公司现拥有开坯机、精密冷轧机、冷拔机、精密矫直机、内外抛光机等，
并且还有无氧光亮热处理炉、无尘光亮生产线、无尘包装车间等全套生产流水线，主要生产各种超精密、超洁净、超光亮、高强度的无缝不锈钢管和高温合金管。
同时拥有高纯净精密清洗设备及完整的EP设备流水线，主要生产高纯度气体管BA，EP TUBE， 在半导体、LCD、太阳能、医疗制药及生物、食品等相关行业及其生产设备中应用甚广，当成固定部件使用。
我们始终坚持并执行"用诚信赢得市场，用勤奋开拓市场，用技术巩固市场，用质量保证市场"的经营理念，将"科技，人才，品牌"作为企业发展的重要因素，
以"追求顾客满意，树立品牌核心价值"作为企业经营宗旨，用创新的技术研发和专业的服务成就美好未来。
The company was established in 2014,
specializing in the production of high-precision stainless steel pipe (cylinder pipe, Ba pipe, EP pipe, high-pressure pipe) and related products.
The company is located in Huashi Town, Jiangyin City, Jiangsu Province,
which is close to the Yangtze River Expressway in the South and the Yangtze River fortress in the North,
with convenient water and land transportation.
The company's production and processing equipment is complete, including precision stainless steel tube branch now has a bloom machine,
precision cold rolling machine, cold drawing machine, precision straightening machine, internal and external polishing machine,
and there are oxygen free bright heat treatment furnace, dust-free bright production line, dust-free packaging workshop and a full set of production lines,
mainly producing all kinds of ultra precision, ultra clean,ultra briaht. high-strength seamless stainless steel products Steel pipe and superalloy pipe,
At the same time, it has high-purity precision cleaning equipment and complete EP equipment assembly line. It mainly produces high-purity gas tubes Ba and EP tube,
which are widely Used in semiconductor, LCD, solar enery, medical pharmaceutical, bioloqical, food and other related industries and their production equipment, as fixed parts.
We always adhere to and implement the business philosophy of "win the market with integrity, develop the market with diligence, consolidate the market with technology,
and quarantee the market with a、quality", We regard"science and technology talents，and brand" as the important factors of enterprise development, take "pursue customer satisfaction,
establish brand core value" as the business purpose, and use innovative technology to research and develop dreams and professional service achievements A better future.
一心只做高精密不锈钢
Only high precision stainless steel tube
10年行业制造经验
7 years manufacturing experience
位于上海百公里经济辐射圈
It is located in the 100 km economic radiation circle of Shanghai
工厂坐落于百强县首位江阴
The factory is located in Jiangyin,the first of the top 100 counties
各种生产设备50余台套
More体寒50 sets of various production equipment
服务终端客户500家以上
More than 100 service terminal customers
Cold rolling
Cleaning
Pipe cutting
Straightening
External polishing
Internal polishing
Electro Polishing
Bright annealing
对质量严格要求，对品质严加控制，对品牌积极建设，是大久的质量原则。
目前大久拥有行业领先的高精尖检测设备，可对每一款产品进行精确的控制和检验。
让客户放心，对品牌负责，让大久的发展更具持续性。
Strict quality reguirements,strict quality control and active brand building are the long-term quality principles.
At present, Dajiu has the industry-leading sophisticated testing equipment, which can accurately control and inspect each product.
Let customers rest assured,be responsible for the brand, and make the development of daijiu more sustainable
中国江苏省江阴市华士镇环东路1号
No.1,Huandong Road,Huashi Town,Jiangyin City,Jiangsu Province,China
sales@dajiutech.com
Mini Cylinder Pipe
气缸管是一种通过冷拔或热轧处理后的一种高精密的钢管材料。由于精密钢管内外壁无氧化层、承受高压无泄漏、高精度、高光洁度、冷弯不变形、扩口、压扁无裂缝等有点所以主要用来生产气动或液压元件的产品，使用不锈钢材质来做气缸管具有产品设计轻小和使用寿命长的特点。因为不锈钢材质具有高强度和耐腐蚀性，相对铝、铁等材质而言，由于强度高，无磁性，因此可以设计比铝铁材质轻薄，可以降低产品的大小和重量，用于迷你气缸比较多.是轻便自动化设备的首选。不锈钢气缸管内外粗糙度可达Ra0.2-0.4μm,内外径公差最高带可达0.03mm;规格从内径Φ3--Φ100mm,壁厚0.5-8mm。
常规尺寸表
| 不锈钢气缸管 Pneumatic Cylinder Stainless Steel Tube | ||
| 内径 Internal Diameter(mm) | 外径 Outside Diameter(mm) | 壁厚 Wall Thickness(mm) |
| 6 | 7 | 0.5 |
| 8 | 9 | 0.5 |
| 10 | 11 | 0.5 |
| 11.25 | 0.63 | |
| 12 | 13.4 | 0.7 |
| 15 | 16.6 | 0.8 |
| 16 | 17.4 | 0.7 |
| 20 | 21.4 | 0.7 |
| 25 | 26.4 | 0.7 |
| 32 | 33.6 | 0.8 |
| 40 | 41.6 | 0.8 |
| 50 | 52 | 1 |
| 63 | 65 | 1 |
Rodless Cylinder Pipe
无杆气缸是指利用活塞直接或间接方式连接外界执行机构，并使其跟随活塞实现往复运动的气缸。这种气缸的最大优点是节省安装空间，分为磁偶无杆气缸（磁性气缸）与机械式无杆气缸。规格从内径Φ10--Φ50mm,壁厚0.5-2.5mm。
常规尺寸表
| 不锈钢气缸管 Pneumatic Cylinder Stainless Steel Tube | ||
| 内径 Internal Diameter(mm) | 外径 Outside Diameter(mm) | 壁厚 Wall Thickness(mm) |
| 10 | 12 | 1 |
| 12 | 14 | 1 |
| 16 | 18 | 1 |
| 20 | 22.8 | 1.4 |
| 25 | 27.8 | 1.4 |
| 32 | 35 | 1.5 |
| 40 | 43 | 1.5 |
| 50 | 53 | 1.5 |
| 63 | 66 | 1.5 |
High Pressure Pipe
无缝高压管适用于各种使用液体或气体作为压力介质的高压应用，例如液压安装、试验工作台和喷水切割设备。兼备很高抗屈强度和延伸率。内表面非常光滑，从而保证抗压力性能。自增强处理延迟了循环疲劳行为。
大久科技生成高压管按下表所列的标准尺寸生产
注：OD = 外径 ID = 内径 WT = 壁厚
| 高压用不锈钢高压管 High Pressure Stainless Steel Tube | |||||||
OD mm |
OD in. |
ID mm |
ID in. |
WT mm |
WT in. |
工作压力（静态） bar 304/316L |
重量 千克 / 米 |
6.00 |
- |
2.20 |
- |
1.920 |
- |
3120 |
0.195 |
6.35 |
1/4 |
2.39 |
2/32 |
1.98 |
0.0781 |
3045 |
0.217 |
6.35 |
1/4 |
2.29 |
0.0902 |
2.03 |
0.0799 |
3180 |
0.220 |
6.35 |
1/4 |
1.59 |
1/16 |
2.38 |
0.0938 |
4300 |
0.237 |
9.52 |
3/8 |
3.20 |
1/8 |
3.16 |
0.1245 |
3380 |
0.503 |
9.52 |
3/8 |
1.60 |
1/16 |
3.96 |
0.1560 |
5530 |
0.551 |
14.00 |
- |
8.00 |
- |
3.00 |
- |
2330 |
0.826 |
14.00 |
- |
5.00 |
- |
4.50 |
- |
3200 |
1.070 |
14.30 |
9/16 |
8.00 |
5/16 |
3.15 |
0.1240 |
2380 |
0.879 |
14.30 |
9/16 |
4.76 |
3/16 |
4.77 |
0.1878 |
3390 |
1.138 |
19.05 |
3/4 |
1.80 |
- |
8.63 |
- |
- |
2.251 |
30.00 |
- |
10.00 |
- |
10.00 |
- |
- |
5.008 |
试验
高压管测试包括：规格检查，技术测试，拉伸测试，金相检查，晶间腐蚀测试，涡流测试
测试可应要求提供，例如：水压试验，疲乏强度可至 4,000 bar，最大内部压力可达 15,000 bar，爆炸压力试验
执行的测试经过认证，符合 DIN EN 10204 3.1 标准。验收测试符合 DIN EN 10204 3.2 标准，可应要求由中立的专家实施。
确定特定工作条件下周期疲劳行为的检查，可应要求执行。我们单独提供建议。
我们的高压管测试实验室经过认证，符合 ISO 17025 标准。
检验
检验范围视客户规范而定。
Bright Annedled Clean Tube&Pipe
BA洁净级不锈钢管主要运用于高纯气体生产,生物制药、光伏、LCD及芯片半导体等对洁净度要求高的行业。 管子按照ASTM A269/A270标准生产,对于洁净度要求超高的环境,管子需在无尘室进行氮气吹扫和包装以满足要求。
TUBE 尺寸表 AVAILABLE TUBE SIZE
| 八分（英寸）TUBE外径代码 Fractional(Inch) Tube O.D.Designation | |||||
| 外径 Outside Diameter | 壁厚 Wall Thickness(mm) | ||||
| 英寸 inch | 毫米 mm | ||||
| 1/4 | 6.35 | 0.89 | 1.00 | ||
| 3/8 | 9.53 | 0.89 | 1.00 | ||
| 1/2 | 12.70 | 1.00 | 1.24 | 1.65 | |
| 3/4 | 19.05 | 1.24 | 1.65 | ||
| 1 | 25.40 | 1.24 | 1.65 | ||
| 1-1/4 | 31.80 | 1.65 | |||
| 1-1/2 | 38.1 | 1.65 | |||
| 2 | 50.80 | 1.65 | |||
| 公制（毫米）TUBMetric(mm) Tube | ||
| 外径 Outside Diameter(mm) | 壁厚 Wall Thickness(mm) | |
| 6 | 0.89 | |
| 10 | 1.00 | |
| 12 | 1.00 | |
| 19 | 1.50 | |
| 23 | 1.50 | |
PIPE 尺寸表 AVAILABLE PIPE SIZE
| 外径 Outside Diameter | 管子表号 Schedule(mm) | |||
| A | 英寸 inch | 毫米 mm | 5S | 10S |
| 8A | 1/4 | 13.8 | 1.20 | 1.65 |
| 10A | 3/8 | 17.3 | 1.20 | 1.65 |
| 15A | 1/2 | 21.7 | 1.65 | 2.10 |
| 20A | 3/4 | 27.2 | 1.65 | 2.10 |
| 25A | 1 | 34.0 | 1.65 | 2.80 |
| 32A | 1-1/4 | 42.7 | 1.65 | 2.80 |
| 40A | 1-1/2 | 48.6 | 1.65 | 2.80 |
| 50A | 2 | 60.5 | 1.65 | 2.80 |
| 65A | 2-1/2 | 76.3 | 2.10 | 3.00 |
| 80A | 3 | 89.1 | 2.10 | 3.00 |
| 100A | 4 | 114.3 | 2.10 | 3.00 |
| 125A | 5 | 139.8 | 2.80 | 3.40 |
| 150A | 6 | 165.2 | 2.80 | 3.40 |
| 200A | 8 | 216.3 | 2.80 | 4.00 |
| 250A | 10 | 267.4 | 3.40 | 4.00 |
| 300A | 12 | 318.5 | 4.00 | 4.50 |
Tube和Pipe管子标准单位长度均为4米/支，6米/支可根据需要定制 Standard unit length for both Tubes&Pipes is 4 meters per piece,6 meters per piece is available upon request.
Electro Polished Clean Tube&Pipe
EP洁净级不锈钢管主要运用于高纯气体生产,生物制药、光伏、LCD及芯片半导体等对洁净度要求高的行业。 管子按照ASTM A269/A270标准生产,对于洁净度要求超高的环境,管子需在无尘室进行氮气吹扫和包装以满足要求。
TUBE 尺寸表 AVAILABLE TUBE SIZE
| 八分（英寸）TUBE外径代码 Fractional(Inch) Tube O.D.Designation | |||||
| 外径 Outside Diameter | 壁厚 Wall Thickness(mm) | ||||
| 英寸 inch | 毫米 mm | ||||
| 1/4 | 6.35 | 0.89 | 1.00 | ||
| 3/8 | 9.53 | 0.89 | 1.00 | ||
| 1/2 | 12.70 | 1.00 | 1.24 | 1.65 | |
| 3/4 | 19.05 | 1.24 | 1.65 | ||
| 1 | 25.40 | 1.24 | 1.65 | ||
| 1-1/4 | 31.80 | 1.65 | |||
| 1-1/2 | 38.1 | 1.65 | |||
| 2 | 50.80 | 1.65 | |||
| 公制（毫米）TUBMetric(mm) Tube | ||
| 外径 Outside Diameter(mm) | 壁厚 Wall Thickness(mm) | |
| 6 | 0.89 | |
| 10 | 1.00 | |
| 12 | 1.00 | |
| 19 | 1.50 | |
| 23 | 1.50 | |
PIPE 尺寸表 AVAILABLE PIPE SIZE
| 外径 Outside Diameter | 管子表号 Schedule(mm) | |||
| A | 英寸 inch | 毫米 mm | 5S | 10S |
| 8A | 1/4 | 13.8 | 1.20 | 1.65 |
| 10A | 3/8 | 17.3 | 1.20 | 1.65 |
| 15A | 1/2 | 21.7 | 1.65 | 2.10 |
| 20A | 3/4 | 27.2 | 1.65 | 2.10 |
| 25A | 1 | 34.0 | 1.65 | 2.80 |
| 32A | 1-1/4 | 42.7 | 1.65 | 2.80 |
| 40A | 1-1/2 | 48.6 | 1.65 | 2.80 |
| 50A | 2 | 60.5 | 1.65 | 2.80 |
| 65A | 2-1/2 | 76.3 | 2.10 | 3.00 |
| 80A | 3 | 89.1 | 2.10 | 3.00 |
| 100A | 4 | 114.3 | 2.10 | 3.00 |
| 125A | 5 | 139.8 | 2.80 | 3.40 |
| 150A | 6 | 165.2 | 2.80 | 3.40 |
| 200A | 8 | 216.3 | 2.80 | 4.00 |
| 250A | 10 | 267.4 | 3.40 | 4.00 |
| 300A | 12 | 318.5 | 4.00 | 4.50 |
Tube和Pipe管子标准单位长度均为4米/支，6米/支可根据需要定制 Standard unit length for both Tubes&Pipes is 4 meters per piece,6 meters per piece is available upon request.
Chromatographic Column Tube
色谱柱用不锈钢管规格多样，需满足高精度、高耐腐蚀性和表面光洁度等严格要求，以确保色谱分析的准确性和重现性。
常规分析柱：内径2-5mm（常用4.6mm，国内有4mm和5mm）
窄径柱（narrow bore）：内径1-2mm
毛细管柱：内径0.2-0.5mm
半制备柱：内径>5mm
实验室制备柱：内径20-40mm，柱长10-30cm
生产制备柱：内径可达几十厘米
标准规格：1/8英寸（0.125英寸）
薄壁规格：3mm
加强型规格：4-5mm
快速分析柱：0.5m
常规分析柱：1-3m
高分离度柱：5m以上（复杂组分）
常见商品柱：4英尺(1.22M)、12英尺(3.66M)、30英尺(9.14M)
316不锈钢：最常用，耐腐蚀性好
UltiMetal去活不锈钢：减少峰拖尾、改善峰形
316L不锈钢：低碳含量，焊接后晶间腐蚀风险低
303不锈钢：适用于GC使用和一般连接
304不锈钢：不推荐用于分析应用
耐腐蚀性：需耐受盐酸、氢氧化钠、乙醇、丙酮、过氧化氢、臭氧等
机械强度：抗拉强度≥515 MPa，屈服强度≥205 MPa，延伸率≥30%
焊接性能：需采用惰性气体保护焊，焊后需进行钝化处理
耐高温性：可耐受121℃高压蒸汽灭菌(SIP)
内壁光洁度：必须高度抛光，Ra值≤0.8μm（理想值≤0.4μm）
抛光工艺：通常采用电解抛光(EP)，比机械抛光(MP)耐腐蚀性提升30%以上
内壁粗糙度：优质产品要求达到0.1μm
表面惰性：需减少峰拖尾、改善峰形并提高数据准确度
内径公差：需保持紧密公差，确保流速一致性
外径公差：需符合标准规格，确保与接头兼容
长度精度：需精确控制，影响分离效果
酸清洗：需用10%硝酸溶液，低速运行清洗
钝化处理：需用20%硝酸溶液形成稳定氧化膜
清洗后处理：需用去离子水冲洗至中性，再用甲醇冲洗去除水分
制药行业：需符合FDA 21 CFR Part 177.2400，GMP要求
高纯度介质输送：需控制总有机碳(TOC)≤500ppb，溶出物≤0.5ppm
无菌制剂生产：需耐受在线灭菌(SIP)与化学灭菌
常规分析：推荐3mm不锈钢柱+高沸点固定液
环境监测：优选玻璃柱+中等极性固定相
食品检测：建议TPA担体+低浓度涂布方案
高腐蚀性样品：选择316L不锈钢材质
高灵敏度需求：选择内壁光洁度0.1μm的精密抛光管
不锈钢管作为色谱柱的核心组件，其规格和质量直接影响色谱分析的分离效果和数据准确性。选择时应综合考虑分析需求、样品特性和系统兼容性，优先选择内壁高度抛光、材质纯净、尺寸精确的产品，以确保获得最佳的色谱分离效果。
customized stainless steel Tube&Pipes
大久金属科技可以为不同需求客户定制工艺生产客户要求的不锈钢管。| OD | WT | Kg/m | Length | ||
| mm | mm |
|
mm | mm | mm |
| 3 | 0.5 | 0.03 | 4000 | 6000 | up to 10000 |
| 3 | 0.7 | 0.04 | 4000 | 6000 | up to 10000 |
| 6 | 1 | 0.13 | 4000 | 6000 | up to 10000 |
| 6 | 1.5 | 0.17 | 4000 | 6000 | up to 10000 |
| 8 | 1 | 0.18 | 4000 | 6000 | up to 10000 |
| 8 | 1.5 | 0.24 | 4000 | 6000 | up to 10000 |
| 8 | 2 | 0.3 | 4000 | 6000 | up to 10000 |
| 10 | 1 | 0.23 | 4000 | 6000 | up to 10000 |
| 10 | 1.5 | 0.32 | 4000 | 6000 | up to 10000 |
| 10 | 2 | 0.4 | 4000 | 6000 | up to 10000 |
| 12 | 1 | 0.28 | 4000 | 6000 | up to 10000 |
| 12 | 1.5 | 0.39 | 4000 | 6000 | up to 10000 |
| 12 | 2 | 0.5 | 4000 | 6000 | up to 10000 |
| 14 | 1 | 0.33 | 4000 | 6000 | up to 10000 |
| 14 | 1.5 | 0.47 | 4000 | 6000 | up to 10000 |
| 14 | 2 | 0.6 | 4000 | 6000 | up to 10000 |
| 15 | 1 | 0.35 | 4000 | 6000 | up to 10000 |
| 15 | 1.5 | 0.51 | 4000 | 6000 | up to 10000 |
| 15 | 2 | 0.65 | 4000 | 6000 | up to 10000 |
| 16 | 1 | 0.38 | 4000 | 6000 | up to 10000 |
| 16 | 1.5 | 0.54 | 4000 | 6000 | up to 10000 |
| 16 | 2 | 0.7 | 4000 | 6000 | up to 10000 |
| 16 | 2.5 | 0.85 | 4000 | 6000 | up to 10000 |
| 18 | 1 | 0.43 | 4000 | 6000 | up to 10000 |
| 18 | 1.5 | 0.62 | 4000 | 6000 | up to 10000 |
| 18 | 2 | 0.8 | 4000 | 6000 | up to 10000 |
| 18 | 2.5 | 0.97 | 4000 | 6000 | up to 10000 |
| 20 | 1.5 | 0.69 | 4000 | 6000 | up to 10000 |
| 20 | 2 | 0.9 | 4000 | 6000 | up to 10000 |
| 20 | 2.5 | 1.09 | 4000 | 6000 | up to 10000 |
| 20 | 3 | 1.28 | 4000 | 6000 | up to 10000 |
| 22 | 1.5 | 0.77 | 4000 | 6000 | up to 10000 |
| 22 | 2 | 1 | 4000 | 6000 | up to 10000 |
| 25 | 1.5 | 0.77 | 4000 | 6000 | up to 10000 |
| 25 | 2 | 1.15 | 4000 | 6000 | up to 10000 |
| 25 | 2.5 | 1.41 | 4000 | 6000 | up to 10000 |
| 25 | 3 | 1.65 | 4000 | 6000 | up to 10000 |
| 28 | 1.5 | 0.88 | 4000 | 6000 | up to 10000 |
| 28 | 2 | 1.15 | 4000 | 6000 | up to 10000 |
| 28 | 2.5 | 1.6 | 4000 | 6000 | up to 10000 |
| 30 | 2.5 | 1.72 | 4000 | 6000 | up to 10000 |
| 30 | 3 | 2.03 | 4000 | 6000 | up to 10000 |
| 30 | 4 | 2.6 | 4000 | 6000 | up to 10000 |
| 35 | 2 | 1.65 | 4000 | 6000 | up to 10000 |
| 35 | 2.5 | 2.03 | 4000 | 6000 | up to 10000 |
| 35 | 3 | 2.4 | 4000 | 6000 | up to 10000 |
| 38 | 2 | 1.8 | 4000 | 6000 | up to 10000 |
| 38 | 3 | 2.63 | 4000 | 6000 | up to 10000 |
| 38 | 4 | 3.41 | 4000 | 6000 | up to 10000 |
| 38 | 5 | 4.13 | 4000 | 6000 | up to 10000 |
| 42 | 2 | 2 | 4000 | 6000 | up to 10000 |
| 42 | 3 | 2.93 | 4000 | 6000 | up to 10000 |
| 50 | 5 | 5.63 | 4000 | 6000 | up to 10000 |
|
OD <6 mm, tolerances according to ASTM A632 |
||
|
Size OD, mm |
Tolerances OD, mm |
Wall thickness % |
| <4.76-2.38 | +0.08/-0 | +/- 10 |
|
OD 6-42 mm EN 10305-1 |
||
|
Size OD, mm |
Tolerances OD, mm |
Wall thickness % |
| 6-30 | +/-0.08 | +/-10 |
| 32-40 | +/-0.15 | +/-10 |
| 42 | +/-0.20 | +/-10 |
| Imperial size | OD | WT | Kg/m | Length | ||
| mm | mm | ft | mm | ft | ||
| 1/8" x 22 BWG | 3.18 | 0.71 | 0.044 | 20 | 6096 | up to 32 |
| 1/8" x 20 BWG | 3.18 | 0.89 | 0.051 | 20 | 6096 | up to 32 |
| 3/16" x 20 BWG | 4.76 | 0.89 | 0.086 | 20 | 6096 | up to 32 |
| 1/4" x 22 BWG | 6.35 | 0.71 | 0.1 | 20 | 6096 | up to 32 |
| 1/4" x 20 BWG | 6.35 | 0.89 | 0.122 | 20 | 6096 | up to 32 |
| 1/4" x 20 SWG | 6.35 | 0.91 | 0.124 | 20 | 6096 | up to 32 |
| 1/4" x 18 SWG | 6.35 | 1.22 | 0.157 | 20 | 6096 | up to 32 |
| 1/4" x 18 BWG | 6.35 | 1.24 | 0.159 | 20 | 6096 | up to 32 |
| 1/4" x 16 SWG | 6.35 | 1.63 | 0.193 | 20 | 6096 | up to 32 |
| 1/4" x 16 BWG | 6.35 | 1.65 | 0.194 | 20 | 6096 | up to 32 |
| 5/16" x 20 BWG | 7.94 | 0.89 | 0.157 | 20 | 6096 | up to 32 |
| 5/16" x 20 SWG | 7.94 | 0.91 | 0.16 | 20 | 6096 | up to 32 |
| 3/8" x 20 BWG | 9.53 | 0.89 | 0.193 | 20 | 6096 | up to 32 |
| 3/8" x 20 SWG | 9.53 | 0.91 | 0.196 | 20 | 6096 | up to 32 |
| 3/8" x 18 SWG | 9.53 | 1.22 | 0.264 | 20 | 6096 | up to 32 |
| 3/8" x 18 BWG | 9.53 | 1.24 | 0.257 | 20 | 6096 | up to 32 |
| 3/8" x 16 SWG | 9.53 | 1.63 | 0.322 | 20 | 6096 | up to 32 |
| 3/8" x 16 BWG | 9.53 | 1.65 | 0.326 | 20 | 6096 | up to 32 |
| 3/8" x 14 SWG | 9.53 | 2.03 | 0.381 | 20 | 6096 | up to 32 |
| 3/8" x 14 BWG | 9.53 | 2.11 | 0.391 | 20 | 6096 | up to 32 |
| 1/2" x 20 SWG | 12.7 | 0.89 | 0.263 | 20 | 6096 | up to 32 |
| 1/2" x 20 BWG | 12.7 | 0.91 | 0.268 | 20 | 6096 | up to 32 |
| 1/2" x 18 SWG | 12.7 | 1.22 | 0.35 | 20 | 6096 | up to 32 |
| 1/2" x 18 BWG | 12.7 | 1.24 | 0.356 | 20 | 6096 | up to 32 |
| 1/2" x 16 SWG | 12.7 | 1.63 | 0.452 | 20 | 6096 | up to 32 |
| 1/2" x 16 BWG | 12.7 | 1.65 | 0.456 | 20 | 6096 | up to 32 |
| 1/2" x 14 SWG | 12.7 | 2.03 | 0.542 | 20 | 6096 | up to 32 |
| 1/2" x 14 BWG | 12.7 | 2.11 | 0.559 | 20 | 6096 | up to 32 |
| 5/8" x 18 SWG | 15.88 | 1.22 | 0.448 | 20 | 6096 | up to 32 |
| 5/8" x 18 BWG | 15.88 | 1.24 | 0.454 | 20 | 6096 | up to 32 |
| 5/8" x 16 SWG | 15.88 | 1.63 | 0.582 | 20 | 6096 | up to 32 |
| 5/8" x 16 BWG | 15.88 | 1.65 | 0.588 | 20 | 6096 | up to 32 |
| 3/4" x 18 SWG | 19.05 | 1.22 | 0.544 | 20 | 6096 | up to 32 |
| 3/4" x 18 BWG | 19.05 | 1.24 | 0.553 | 20 | 6096 | up to 32 |
| 3/4" x 16 SWG | 19.05 | 1.63 | 0.711 | 20 | 6096 | up to 32 |
| 3/4" x 16 BWG | 19.05 | 1.65 | 0.718 | 20 | 6096 | up to 32 |
| 3/4" x 14 BWG | 19.05 | 2.11 | 0.895 | 20 | 6096 | up to 32 |
| 3/4" x 13 BWG | 19.05 | 2.41 | 1 | 20 | 6096 | up to 32 |
| 3/4" x 12 BWG | 19.05 | 2.77 | 1.13 | 20 | 6096 | up to 32 |
| 1" x 18 SWG | 25.4 | 1.22 | 0.739 | 20 | 6096 | up to 32 |
| 1" x 18 BWG | 25.4 | 1.24 | 0.75 | 20 | 6096 | up to 32 |
| 1" x 16 BWG | 25.4 | 1.65 | 0.981 | 20 | 6096 | up to 32 |
| 1" x 14 BWG | 25.4 | 2.11 | 1.23 | 20 | 6096 | up to 32 |
| 1" x 13 BWG | 25.4 | 2.41 | 1.39 | 20 | 6096 | up to 32 |
| - | 25.4 | 3.2 | 1.78 | 20 | 6096 | up to 32 |
| OD <6 mm, tolerances according to ASTM A632 | ||
| Size OD, mm | Tolerances OD, mm | Wall thickness, % |
| < 6–4.76 | +0.10 / -0 | +/-10 |
| < 4.76–2.38 | +0.08 / -0 | +/-10 |
| < 2.38 | +0.05 / -0 | +/-10 |
| OD 6.35-25.4 mm according to EN 10305-1 | ||
| Size OD, mm | Tolerances OD, mm | Wall thickness, % |
| 6.35 - 25.4 | +/-0.08 | +/-10 |
MANUFACTURING PROCESS & SPECIFICATIONS
热穿孔 用于制造热成品管材.
冷轧轧制是用于生产无缝，冷加工精整的一种广泛使用的步骤中，高合金，不锈钢和镍基合金管材，与能够达到较低的外部的过程直径和比热穿孔空心的公差更严密.
冷拔用于获得较小的公差范围(外径和壁厚).
光亮&固溶退火是在冷加工后释放压力.
大久金属科技生产中使用的原材料来自最可靠的钢厂。
奥氏体不锈钢
这种类型的等级涵盖了不锈钢等级的大部分。定义该等级的是超过15％的铬百分比，它们可抵抗由化学影响引起的不同类型的腐蚀。奥氏体不锈钢牌号的一种特定类型是耐热不锈钢牌号，当暴露于高温下时，它们可以保持其机械性能。
双工-超双工
与标准奥氏体等级相比，奥氏体-铁素体不锈钢（双相钢）的特点是镍的含量相对较低。它们的主要特征是机械性能，特别是其高应力腐蚀开裂性。它们特别适合于海上应用和化学工业。
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His at quem vituperata, an nam laboramus interesset. Nostro tractatos has et. Est nulla ceteros ei, laoreet alienum cum ei. Mei odio vulputate idsit ex enim sonet legere. Ignota audiam vel et, vix dolore suscipiantur ne sea soleat iisque eu.
DATA PARAMETERS
不同的内部表面抛光技术获得不同等级的钢管。 Tubes & Pipes are available with different inside diameter finish levels.
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| 酸洗钝化管Annealed and Pickled | 机械抛光管Mechanically Polished | 光亮退火管Bright Annedled | EP管Electro Polished |
| 区分 Inside Surface Level | 外径尺寸 O.D.size | Ra(μinch) | Ry(μm) |
| AP | 所有 ALL | ≤100 | ≤25 |
| MP | 139.8≤OD≤355.6 | ≤20 | ≤4.0 |
| BA | 6.35≤OD≤48.6 | ≤15 | ≤3.0 |
| 48.6≤OD≤165.2 | ≤20 | ≤4.0 | |
| EP | 6.35≤OD≤48.6 | ≤10 | ≤0.5 |
| 48.6≤OD≤165.2 | ≤10 | ≤0.7 |
| 钢种 Steel Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| 304SS | ≤0.080 | ≤1.000 | ≤2.000 | ≤0.040 | ≤0.030 | 8-11 | 18-20 | - |
| 316/316L Dual | ≤0.035 | ≤0.750 | ≤2.000 | ≤0.040 | ≤0.030 | 10-15 | 16-18 | 2-3 |
| 316L SIMGLE | ≤0.030 | ≤1.000 | ≤2.000 | ≤0.040 | ≤0.030 | 12-16 | 16-18 | 2-3 |
| 316L DOUBLE | ≤0.010 | ≤0.300 | ≤0.400 | ≤0.040 | ≤0.030 | 14-15 | 16-17 | 2.2-2.5 |
| 钢种 Steel Grade | 屈服强度 Yield Strength（N/mm²） | 拉伸强度 Tensile Strength（N/mm²） | 伸长率 Elongation（%） |
| 304SS | ≥205 | ≥520 | ≥35 |
| 316SS | ≥205 | ≥520 | ≥35 |
| 316LSS | ≥175 | ≥480 | ≥35 |
| 区分 Inside Surface Level | 标准 Standard | |
| 最大粒子直径 Max Particle Size | 允许粒子数量 Allowabel Particle No | |
| AP | ＞0.3μm | 5/cf |
| MP | ＞0.1μm | 5/cf |
| BA | ＞0.1μm | 5/cf |
| EP | ＞0.1μm | 1/cf |
| 检测项目Inspection Items | 油脂成分测试Oil Content Measurement | 纯水阻抗测试Liquid Registivity Measurement | 离子分析Ion Charomatography Analysis | 露点测试Dew Point Measurement |
| AP | 0.1mg/ft²或最低（or lowest） | - | - | - |
| BA/MP | 0.01mg/ft²或最低（or lowest） | ≥18MΩ▪cm | 10ng/cm³或最低（or lower） | -75℃或最低（or lower） |
| EP | - | ≥18MΩ▪cm | 5ng/cm³或最低（or lower） | -75℃或最低（or lower） |
| 外径 Outside Diameter | 壁厚 Wall Thickness | ||||||||||||||
| Tube | Pipe | MP/BA/EP | AP | Tube(mm) | Pipe 管表号5SPipe Schedule 5S | Pipe 管表号10SPipe Schedule 10S | |||||||||
| 英寸Inch | 米制Metric | A | 英寸Inch | T | MP/EP | BA | AP | T | MP/BA/EP | BA | T | MP/BA/EP | BA | ||
| 1/4 | +0.1-0.00 | ±0.30 | 1.00 | +0.05-0.00 | +0.05-0.00 | ±0.30 | |||||||||
| 3/8 | 1.00 | ||||||||||||||
| 1/2 | 1.24 | +0.01-0.15 | ±0.1 | ||||||||||||
| 3/4 | 1.65 | ||||||||||||||
| 1 | ±0.1 | 1.65 | |||||||||||||
| 6 | +0.1-0.00 | 1.00 | +0.05-0.00 | +0.05-0.00 | |||||||||||
| 10 | 1.00 | ||||||||||||||
| 12 | 1.00 | +0.01-0.15 | ±0.1 | ||||||||||||
| 19 | 1.50 | ||||||||||||||
| 23 | ±0.1 | 1.50 | |||||||||||||
| 8A | 1/4 | ±0.08 | ±10% | 1.20 | ±0.12 | ±0.20 | 1.65 | ±0.15 | ±0.20 | ||||||
| 10A | 3/8 | ±0.10 | 1.20 | 1.65 | |||||||||||
| 15A | 1/2 | 1.65 | ±0.15 | 2.10 | ±0.21 | ±10% | |||||||||
| 20A | 3/4 | 1.65 | 2.10 | ||||||||||||
| 25A | 1 | 1.65 | 2.80 | ±0.28 | |||||||||||
| 32A | 1-1/4 | ±0.15 | 1.65 | 2.80 | |||||||||||
| 40A | 1-1/2 | ±0.20 | 1.65 | 2.80 | |||||||||||
| 50A | 2 | ±0.40 | 1.65 | 2.80 | |||||||||||
| 65A | 2-1/2 | 2.10 | ±0.20 | ±10% | 3.00 | ±0.30 | |||||||||
| 80A | 3 | 2.10 | 3.00 | ||||||||||||
| 100A | 4 | ±0.80 | 2.10 | 3.00 | |||||||||||
| 125A | 5 | ±1.00 | 2.10 | ±0.28 | 3.40 | ±0.34 | |||||||||
| 150A | 6 | ±1.50 | 2.10 | 3.40 | |||||||||||
| 200A | 8 | ±2.00 | 2.10 | 4.00 | ±0.40 | ||||||||||
| 不锈钢气缸管 Pneumatic Cylinder Stainless Steel Tube | |||||||
| 内径 Internal Diameter(mm) | 外径 Outside Diameter(mm) | 壁厚 Wall Thickness(mm) | 圆度 Roundness | 直线度 Straightness | 粗糙度 Roughness | ||
| 6 | +0.040 | 7 | +0.04-0.04 | 0.5 | 0.03 | 1.5mm/m | Ra≤0.4μm |
| 8 | 9 | 0.5 | |||||
| 10 | 11 | 0.5 | 1.2mm/m | ||||
| 11.25 | 0.63 | ||||||
| 12 | +0.050 | 13.4 | +0.05-0.05 | 0.7 | |||
| 15 | 16.6 | 0.8 | 1mm/m | ||||
| 16 | 17.4 | 0.7 | |||||
| 18 | 1 | ||||||
| 20 | 21.4 | 0.7 | 0.04 | ||||
| 22.8 | 1.4 | ||||||
| 25 | 26.4 | 0.7 | |||||
| 27.8 | 1.4 | ||||||
| 32 | +0.060 | 33.6 | 0.8 | 0.05 | |||
| 35 | 1.5 | ||||||
| 40 | 41.6 | 0.8 | |||||
| 43 | 1.5 | ||||||
| 50 | +0.070 | 52 | +0.07-0.07 | 1 | |||
| 53 | 1.5 | ||||||
| 63 | 65 | 1 | |||||
| 66 | 1.5 | ||||||
Display Of Enterprise Qualifications
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| 一种小直径不锈钢管自清洁清洗装置2021220101354 | 一种迷你气缸管内壁抛光装置2021223877969 | 一种无杆气缸管抛光装置2021223874119 | ||
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| 质量管理体系ISO 9001 证书 | 环境管理体系ISO 14001 证书 | 小直径不锈钢管自清洁控制系统 2022SR0127653 | ||
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| 不锈钢管外壁抛光自动送料控制系统 2022SR0127500 | 金属制品加工制造智能管理平台 2021SR1315954 | 金属制品加工质量检验系统 2021SR1315953 | ||
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Lorem ipsum dolor sit amet consectetur.
Use this area to describe your project. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Est blanditiis dolorem culpa incidunt minus dignissimos deserunt repellat aperiam quasi sunt officia expedita beatae cupiditate, maiores repudiandae, nostrum, reiciendis facere nemo!
His at quem vituperata, an nam laboramus interesset. Nostro tractatos has et. Est nulla ceteros ei, laoreet alienum cum ei. Mei odio vulputate idsit ex enim sonet legere. Ignota audiam vel et, vix dolore suscipiantur ne sea soleat iisque eu.