Size(round pipe)

9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 31.8, 35, 60, 63.5, 73, 76.2, 88.9, 101.6, 114.3, 127, 133, 159,168, 219 mm 

Size(square pipe)

10×10,12×12,18×18,23×23,38×38,50×50,70×70,100×100,20×10,23×10,24×12,25×13,36×23,40×20,50×20,60×15,75×45,80×60,95×45,100×60,150×100 mm

Size (oval pipe)

30×15,80×40 mmor customized

Thickness

0.01-3 mm

Length

6m or according to customer’s request

Outer diameter

8-219mm

Tolerance 

Outer diameter :±0.2mm   

Thickness :±0.02mm   

Length :±0.5mm

Process method

Code drawn,annealed with nitrogen protection, ultrasonic,automatic shape, polished

Tolerance

a) Outer Diameter: +/- 0.2mm

b) Thickness: +/- 0.02mm

c) Length: +/- 5mm

NO.1

The surface is finished by heat treatment and pickling or processes corresponding there to after hot rolling

2D

The finishes after cold rolling, by heat treatment, pickling or other equivalent treatment

2B

The finishes after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to give an appropriate luster

BA

Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror

NO.3

Polished with abrasive belt of grit#100~#200,have better brightness with discontinuous coarse stria

NO.4

Polished with abrasive belt of grit#150~#180,have better brightness with discontinuous coarse stria

HL

Polished with abrasive belt of grit#150~#320,have better brightness with discontinuous coarse stria

8K

The product have excellent brightness and perfect reflexivity, can be the mirror