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High precision seamless carbon/alloy steel pipe/tube

Posted on 2019/05/22
Product Attribute

High precision seamless carbon/alloy steel pipe/tube
1, Widely used in precise constructions & machinery
2, Size ranges: OD 6-80mm,WT 0.6-8mm
3, Precision: OD +/-0.05mm,WT +/-0.05mm.special accuracy:+/-0.03mm
4, Length: 5-10m,random length or fixed length
5, Industrial craft: cold drawn or cold rolled
6, Certificate: ISO9001-2008 quality
7, Manufacturer:direct selling
8, Annealed:+NBK,+GBK,+BKS

Precision range

Dimension tolerance comparison Chart
Outer Diameter GB/T3639 DIN2391(EN10305) Manufacturers standard Special standard
6-30mm ±0.10mm ±0.08mm ±0.05mm ±0.03mm
31-40mm ±0.15mm ±0.15mm ±0.05mm ±0.03mm
41-50mm ±0.20mm ±0.20mm ±0.05mm ±0.03mm
51-60mm ±0.25mm ±0.25mm ±0.08mm ±0.03mm
61-65mm ±0.30mm ±0.30mm ±0.10mm ±0.05mm
Thick tolerance ±0.12mm ±0.10mm ±0.05mm ±0.03mm

Alloy steel pipe Properties

Steel Grade DIN2391/EN10305/GB/T3639 Delivery status
+Cb +LCb +SR +Ac +N
Rm/Mpa A/% Rm/Mpa A/% Rm/Mpa RcH/MPa A/% Rm/Mpa A/% Rm/Mpa RcHd/MPa A/%
No less than
SAE1010 430 8 380 10 400 300 16 335 24 320-450 215 27
SAE1020 550 5 520 8 520 375 12 390 21 440-570 255 21
SAE1035 590 5 550 7 - - - 510 17 ≥460 280 21
SAE1045 645 4 630 6 - - - 590 14 ≥540 340 18
Q345 640 4 580 7 580 450 10 450 22 490-630 355 22
a Rm--Tensile Strength,RcH--Yield Strength,A--Elongation
b Cause the cold working,the Yield Stength is nearly closed with the Tensile Strength,suggest below relational expression:
 --+C condition:RcH≥0.8Rm,--+LC condition:RcH≥0.7Rm
c Suggest below relational expression:RcH≥0.5Rm
d Steel tube:Outer diameter(OD)≤30mm and Wall thickness(WT)≤3mm,the Yield Strength may reduce 10 MPa

Usage and Application

Usage 1. Auto and motorcycle steel pipe
2. Gas spring steel Tube
3. Boiler Pipe
4. Low and middle pressure fluid transportation pipeline
5. Hydraulic system steel tube
6. Electric industry
Application Cold drawn or cold rolled precision seamless steel tubes for hydraulic pressure and pneumatic services.
For Auto use,machinery use,oil cylinder tube,motorcycle shock reducer use,auto shock reducer inner cylinder,gas spring use etc.
Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building,Liquid service, petroleum cracking, chemical fertilizer equipment,Drawing-oil-equipment and structure purposes.

Q: Can provide OEM/ODM service?
A: Yes. Please feel free to contact us for more details discuss.
Q: How is your Payment Term?
A:One is 30% deposit by TT before production and 70% balance against copy of B/L; the other is Irrevocable L/C 100% at sight.
Q: Can we visit your factory?
A: Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
Q: Can you provide sample?
A: Yes, for regular sizes sample is free but buyer need to pay freight cost.
Q.Surface coating?
A:Antirusted painting, varnish painting, galvanized, 3LPE, 3PP,Zinc oxide yellow primer,Zinc phosphate primer and as per customers request.

Recommended Products:
ASTM A355 P5 seamless alloy steel pipe
ASTM/DIN/JIS Chrome moly alloy steel pipe
ASTM A335 P11 Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Low alloy steel seamless boiler tubes

how to contact us?


Cangzhou Datang Steel Pipe Co., Ltd All Right Resevered.