High Quality Black Square and Rectangular Steel Pipes and Tubes
Precision steel pipe high size, high precision, pipe inside and outside surface finish, after heat treatment of steel pipe inside and outside the surface are no oxide film, steel pipe flaring, flattening without cracks, cold bending without deformation, and can withstand high pressure, can make a variety of complex deformation and mechanical deep processing.
National standards for precision steel pipes; GB/T699-2008, National standard for precision steel pipe; GB/T3639-2008, in addition, there may also be the application of GB/T8162-2008 structure with precision steel pipe.
Precision steel pipe European standard: DIN2391
Precision steel pipe is widely used in automobiles, motorcycles, electric vehicles, petrochemical, electric power, ships, aerospace, bearings, pneumatic components, medium and low pressure boiler seamless steel pipe and other fields, can also be applied to steel bar sleeve, bearings, hydraulic, mechanical processing and other fields!
The production process of precision steel pipe is the same as that of ordinary seamless pipe, that is, there is a final pickling and cold rolling procedure.
Precision steel pipe process flow
Tube billet heating - inspection - skin - - - perforation, pickling passivation, grinding - oil lubrication dry - cold rolled - to - cut head - inspection, identification, finished product packaging.
1. Smaller outside diameter.
2. High precision can be done in small batches.
Precision steel pipe.
Precision steel pipe.
3. The cold drawing product has high precision and good surface quality.
4. The cross area of the steel pipe is more complex.
5. The steel pipe has better performance and the metal is dense.
6. The cold drawing product has high precision and good surface quality.
7. The cross area of the steel pipe is more complex.
8. The steel pipe has better performance and the metal is dense.
|Length||Fixed Length 5.8m, 8m, 12m.Random Length or as request|
|Crade||ASTM A 106 GR A & B, A 53 GR A& B, ASTMA 333, Gr 1 t0 6(IBR & NON IBR) APL 5L GR, A8 B, AP15L GR.X-42, X-46, X-52.X-56，X-60X-65 8 X-70 IN PSL 1 8 PSL 2 ASTM A 335.GR F1.P2.P5.P9.P11.P 12.P22, P91.GRT1T2, T5, T9, T 11.T 12, T 22, T 91(IBR &NONIBR) S10C, S15C, S20C, S45C, S37, St35.8St45-8, S|