China Supplier Round Carbon Seamless Steel Tube Cold rolled Seamless Pipe

China Supplier Round Carbon Seamless Steel Tube Cold rolled Seamless Pipe

Cold rolling refers to the process of cold drawing, cold bending, cold drawing and other cold processing at room temperature to process the steel strip into various types of steel. Cold rolled seamless steel tube is used for precision mechanical structure, hydraulic equipment or steel sleeve of high dimensional accuracy and good surface finish of a seamless steel tube.

High-precision cold drawn precision steel pipe is a new type of steel pipe, and its main feature is high precision. There are usually two production processes for two-roll mills and three-roll mills. The precision of the three-roll mill for producing cold-rolled seamless steel tubes is higher, and can be controlled within a few filaments, but the price is relatively high.

The promotion and application of high-precision cold drawn precision steel pipe saves steel and improves processing efficiency and saves energy. The so-called high-precision cold drawn seamless steel pipe refers to the inner and outer diameter dimensional accuracy (tolerance range) is strict, internal and external surface finish, roundness and straightness. Good, can greatly save machining time, improve material utilization, and help improve product quality.

Product specification:

Packaging Details:

1. Small OD: In hexagonal bundle with steel strips 
   Large OD: In bulk 
  Wrapped in waterproof plastic woven bag 
   Filled in wooden cases
   As required

2. Delivery Detail: Shipped in 7-15 days after payment

We have always been inspecting and monitoring the quality through process at control points and conducting strict inspections at every step, resulting to its high-quality products in line with world standards and customers request.

raw material inspection: dimension and tolerance check, appearance quality check, mechanical properties testing, weight check and raw materials quality assurance certificate check

semi-finished goods inspection: physical and chemical inspection, leakage magnetism and ultrasonic inspection

finished goods inspection: dimension and tolerance, appearance quality check and mechanical properties testing

inspection before ex-factory: We arrange our QC staff to manufacture’s plant for final quality and packing inspection each time before we deliver goods to port for shipping, and the connected sales staff will be with QC staff to make sure we did everything fully and strictly meet customer's requirements.