China AISI 4130 chrome moly alloy seamless steel pipe

China AISI 4130 chrome moly alloy seamless steel pipe 

North-Pipe has various types of mechanical steel tube/pipe to meet your various needs. OEM is our strongest service such as the Laser / Plasma Cutting, Folding, Punching, Rolling, Bending, and Welding in a variety of steel processing can be the overall undertake, the accumulation of rich experience, superb technology, enjoy the reputation of honor "Steel Forming Magician". We can reduce the antidumping duty by making steel pipes into semifinished goods according to your requirements or drawings.

Widely used in Machinery, Automotive & Aerospace Industry,Bicycles, Furniture, Apparatus, other mechanical parts and structures and so on.

1. Q: What’s the delivery condition of seamless cold drawn mechanical tubing?      

   A:

1)BK (+C) Cold finished/hard (cold finished as drawn).

2) BKW (+LC)  Cold finished/soft 

3) BKS (+SR) Cold finished/stress relieve annealed.

4) GBK (+A) Annealed.

5) NBK (+N) Normalized.

2. Q: What’s the surface roughness of seamless mechanical tubing you could do ?

   A:Surface Roughness: a=0.02~0.4micron or depends on the customer’s requirement.

3.Q: How’s the straightness of cold drawn mechanical tubes?

   A: Straightness:0.3~0.8mm/1000mm

4.Q: Shall we get the discount if repeating our orders?

   A: Of course, biggest discount will be shared with the repeat customers.