Precision annealed seamless steel tubes for instruments

Short Description:

Precision seamless pipe is a kind of high-precision steel pipe material processed by cold drawing or hot rolling. Because the inner and outer walls of the precision steel pipe have no oxide layer, withstand high pressure without leakage, high precision, high finish, no deformation after cold bending, no expansion. Therefore, it is mainly used to produce pneumatic or hydraulic components, such as air cylinders or oil cylinders, which can be seamless pipes or welded pipes. 

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Product Definition

Seamless steel pipe is perforated by the whole round steel pipe, there is no weld on the surface of the steel pipe, called seamless steel pipe. According to the production method, seamless steel pipe can be divided into hot rolled seamless steel pipe, cold rolled seamless steel pipe, cold drawn seamless steel pipe, extruded seamless steel pipe, pipe jacking, etc. According to the shape of the section, seamless steel pipe can be divided into two kinds: round pipe and special-shaped pipe. Special-shaped pipe has square, oval, triangle, hexagonal, melon seed shape, star shape and many complex shapes with wings. The maximum diameter is 900mm, and the minimum diameter is 4mm. According to different uses, there are thick wall seamless steel pipe and thin wall seamless steel pipe. Seamless steel pipe is mainly used for petroleum geology drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and high precision structural steel pipe for automobile, tractor and aviation.

The chemical composition of precision steel pipes includes carbon C, silicon Si, manganese Mn , Sulphur S, Phosphorus P, Chromium Cr, compared with solid steel such as round steel, seamless steel pipe has lighter weight when the bending and torsional strength is the same. It is an economical section steel and is widely used in the manufacture of structural parts and machinery Components.

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Product Details

Product name High precision precision annealed carbon seamless steel pipe
Material 10#, 20#, 35#, 45#, 55#, Q355B, 25Mn, 16MnCr5, 20MnCr5, 30CrMo, 35CrMo, 42CrMo, 20Cr, 40Cr, 20CrNiMo ; ST37, ST45, ST52, 34CrMo4,
42CrMo4 ; E235, E255, E355 ; 1010, 1020, 1026, 1035, 1045, 1050, 4130, 4140, 8620 ; STKM 11A, STKM 12B, STKM 13C, STKM 14B ; S10C,
S20C, S35C, S45C and etc.
Standard ASTM A53-2007, GB 13296-2007, BS 1387, BS 1139, BS EN 39, BS EN10219
Length 1000mm-12000mm or customized
Outer Diameter(Round) 20 - 273 mm or as requirement
Thickness 0.5 - 20 mm or as requirement
Processing Service Bending, Welding, Decoiling, Punching, Cutting
Payment Term 30%T/T Advance + 70% Balance payment
Technique Cold Rolled And Hot Rolled
Delivery time 7-15 Days


Production flow chart

Production flow chart


1.Why you choose us ?

Our company has been in for 12 years. We control the quality of the products very strictly, there are special people for the quality.

If you got lower price from other supplier ,we will pay back twice to customers about the higher price.

2.How long is your delivery time?

According to the quantity.Generally within 2-7 days if in stock.And 15-20 days if not in stock.

3.What is your payment terms?

 A: By T/T 30% in advance ,and 70% before delivery.

 B:100% L/C at sight.

 C:By T/T 30% in advance,and 70% L/C at sight.

4.Do you provide samples ? Is it free?

Yes, we offer the sample for free but do not pay for the cost of freight.

5.What if the customer is not satisfied?

If there is a problem with the product,we take full responsibility. 

If there is a problem in the transportation process,we will help you to solve it.

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