Audited Supplier
OD 15-75mm
Free
Free
Seamless
Cold Drawn
Carbon Steel
Oiled
Hydraulic/Automobile Pipe, Machinery Industry, Special Purpose
Round
Yes
Yes
1-20mm
15-70mm
bluesky pipe
Bund
China
7304319000
Product Description
Precision steel pipe is a high-precision steel pipe material processed by cold drawing or hot rolling. Due to its advantages such as no oxide layer on the inner and outer walls, no leakage under high pressure, high precision, high smoothness, no deformation during cold bending, no expansion or cracking during flattening, precision steel pipes are mainly used to produce products for pneumatic or hydraulic components, such as cylinders or oil cylinders
International major standards
1. EN 10305: European standard series, including EN 10305-1, EN 10305-2, and EN 10305-4, which respectively specify the delivery technical conditions for cold drawn seamless steel pipes, cold drawn welded steel pipes, and cold drawn seamless steel pipes for hydraulic and pneumatic systems.
2. DIN 2391: German standard that specifies the dimensional requirements and delivery technical conditions for cold-rolled or cold drawn precision seamless steel pipes.
3. JIS G3445: Japanese standard, delivery technical conditions applicable to carbon steel pipes for mechanical structures
1. EN 10305: European standard series, including EN 10305-1, EN 10305-2, and EN 10305-4, which respectively specify the delivery technical conditions for cold drawn seamless steel pipes, cold drawn welded steel pipes, and cold drawn seamless steel pipes for hydraulic and pneumatic systems.
2. DIN 2391: German standard that specifies the dimensional requirements and delivery technical conditions for cold-rolled or cold drawn precision seamless steel pipes.
3. JIS G3445: Japanese standard, delivery technical conditions applicable to carbon steel pipes for mechanical structures
| Size tolerance | |||||
| OD | Standard tolerance | Special tolerance | |||
| Outer Diameter | GB/T3639 | DIN2391 | EN10305 | O D | thickness |
| 4mm-20mm | ±0.10 mm | ±0.08 mm | ±0.08 mm | ±0.05mm | ±0.05mm |
| 20mm-30mm | ±0.10 mm | ±0.08 mm | ±0.08 mm | ±0.08 mm | ±0.08 mm |
| 31mm-40mm | ±0.15 mm | ±0.15 mm | ±0.15 mm | ±0.10 mm | ±0.08 mm |
| 41mm-60mm | ±0.20 mm | ±0.20 mm | ±0.20 mm | ±0.15 mm | ±0.15 mm |
| 61mm-80mm | ±0.30 mm | ±0.30 mm | ±0.30 mm | ±0.20 mm | ±0.20 mm |
| 81mm-120mm | ±0.45 mm | ±0.40 mm | ±0.40 mm | ±0.30 mm | ±0.30 mm |
| Equivalent Material referance: | ||||||
| GB | TOCT | ASTM | BS | JIS | NF | DIN |
| 10F | 1010 | 040A10 | XC10 | |||
| 10 | 10 | 10,101,012 | 045M10 | S10C | XC10 | C10,CK10 |
| 20 | 20 | 1020 | 050A20 | S20C | XC18 | C22,CK22 |
| 45 | 45 | 1045 | 080M46 | S45C | XC45 | C45,CK45 |
| 30CrMo | 30XM | 4130 | 1717COS110 | SCM420 | 30CD4 | |
| 42CrMo | 4140 | 708A42 | 42CD4 | 42CrMo4 | ||
| 708M40 | ||||||
| 35CrMo | 35XM | 4135 | 708A37 | SCM3 | 35CD4 | 34CrMo4 |
| GB | ASTM/ASME | DIN | EN | JIS | |||||
| GB/T8162 | 10 | A53 | A | DIN1629 | St37 | EN17121 | St37-2/3 | G3454 | STPG370 |
| GB/T8163 | A106 | A | |||||||
| GB/T3639 | A519 | 1010 | |||||||
| 20 | A53 | B | DIN1629 | St44 | EN17121 | St44-2/3 | G3454 | STPG410 | |
| A106 | B | ||||||||
| A519 | 1020 | ||||||||
| 45 | A1045 | CK45 | |||||||
| Q235 | A519 | 1021 | EN10210-1 | S235JRH | G3444 | STK400 | |||
| EN1097-1 | E235 | ||||||||
| Q345 | A519 | 1524 | DIN1629 | St52 | G3444 | STK500 | |||
| 37Mn5 | J55 | ||||||||
| 35CrMo | 4135 | G4105 | SCM435 | ||||||
| 20Cr | 5120 | SCr420 | |||||||
| 40Cr | 5140 | SCr440 | |||||||
| 15CrMo | SCM415 | ||||||||
| 20CrMo | 4119 | SCM420 | |||||||
| 42CrMo | 4150/4142 | SCM440 | |||||||
| 20CrMnTi | SMK22 | ||||||||
| tandard | Grade | Chemical composition:(%) | |||||||||||
| C | Si | Mn | P≤ | S≤ | Cr | Mo | Cu≤ | Ni≤ | Ti | V | Nb | ||
| GB/T 699 | 10 | 0.07~0.13 | 0.17~0.37 | 0.35~0.65 | 0.035 | 0.035 | ≤0.15 | 0.25 | 0.3 | ||||
| 20 | 0.17~0.23 | 0.17~0.37 | 0.35~0.65 | 0.035 | 0.035 | ≤0.35 | 0.25 | 0.3 | |||||
| 35 | 0.32~0.39 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | ≤0.25 | 0.25 | 0.3 | |||||
| 45 | 0.42~0.50 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | ≤0.25 | 0.25 | 0.3 | |||||
| GB/T3077 | 20Cr | 0.18~0.24 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | 0.70~1.00 | ||||||
| 40Cr | 0.37~0.44 | 0.17~0.37 | 0.50~0.80 | 0.035 | 0.035 | 0.80~1.10 | |||||||
| 20CrMo | 0.17~0.24 | 0.17~0.37 | 0.40~0.70 | 0.035 | 0.035 | 0.80~1.10 | 0.15~0.25 | ||||||
| 42CrMo | 0.38~0.45 | 0.17~0.37 | 0.50~0.80 | 0.90~1.20 | 0.15~0.25 | ||||||||
| 20CrMnTi | 0.17~0.23 | 0.17~0.37 | 0.80~1.10 | 1.00~1.30 | 0.04 | ||||||||
| ~0.10 | |||||||||||||
| steel grade | +C(BK) | +LC(BKW) | +SR(BKS) | +A(GBK) | +N(NBK) | |||||||
| Rm(Mpa) | A(%) | Rm(Mpa) | A(%) | Rm(Mpa) | Reh(Mpa) | A(%) | Rm(Mpa) | A(%) | Rm(Mpa) | Reh(Mpa) | A(%) | |
| 10 | 430 | 8 | 380 | 10 | 400 | 300 | 16 | 335 | 24 | 320~450 | 215 | 27 |
| 20 | 550 | 5 | 520 | 8 | 520 | 375 | 12 | 390 | 21 | 440~570 | 255 | 21 |
| 35 | 590 | 5 | 550 | 7 | - | - | - | 510 | 17 | ≥460 | 280 | 21 |
| 45 | 645 | 4 | 630 | 6 | - | - | - | 590 | 14 | 540 | 340 | 18 |
| 25Mn | 650 | 6 | 580 | 8 | 580 | 450 | 10 | 490 | 18 | - | - | - |
| Q355B | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490~630 | 355 | 22 |
| Q420B | 750 | 4 | 620 | 8 | 690 | 590 | 12 | 520 | 22 | 550~700 | 425 | 22 |
| 25CrMo | 720 | 4 | 670 | 6 | - | - | - | - | - | - | - | - |
| 42CrMo | 720 | 4 | 670 | 6 | - | - | - | - | - | - | - | - |
| Material | 10#-45#, 16Mn, A53-A369, Cr-Mo alloy, Q195-Q345, ST35-ST52, 10#, 20#, 45#, 16Mn, A213, A315, 30CrMo, Q195, Q215, Q235, Q345, ST35, St37, St45, St52 |
| Surface | Black/ Bright |
| Standard | DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094- 2000, GB/T3639, JIS G3101 |
| Size | OD 15mm-75mm |
| Thickness 1-14mm | |
| Processing | Cold rolled/ Cold drawn |
| 1. BK (+C) No heat treatment after last cold forming process. | |
| 2. BKW (+LC) After last heat treatment there is a light finishing pass ( cold drawing) | |
| 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. | |
| 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. | |
| 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere. | |
| Packing | Woven bag/ Wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. |
| Delivery time | Normally 30-40 working days |
Q: Are you trading company or manufacturer?
A: We are professional manufacturer for steel pipes,and our company also is a very professional and technical foreign trade company for steel products. We have more export experience with competitive price and best after-sales service. Apart from this,we can provide a wide range of steel products to meet the requirement of customer.
Q:Will you delivery the goods on time?
A: Yes,we promise to provide best quality products and delivery on time no matter if the price change lot or not. Honesty is our company's tenet.
Q: Do you provide samples ? is it free or extra?
A: The sample could can provide for customer with free,but the freight will be covered by customer account. The sample freight will be returned to customer account after we cooperate.
Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,Wechat and WhatsApp will be online in 24 hours. Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.
Q: Do you have any certifications?
A: Yes,that's what we guarantee to our clients. we have IS09000,IATF16949 certinicate,ISO 14001 certificates etc.Our products are of high quality and we have professional engineers and development team.
Q: What is your terms of payment?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipmenit or paid against copy of B/L within 5 working days. 100% Irrevocable L/C at sight is favorable payment term as well.
Q: Do you accept the third party inspection?
A: Yes absolutely we accept.
