cold drawn welded square pipe tubes

Standard

ASTM A554, Q/GBS1-2005, customers' requests available

Size

Round: 9.5mm-133mm

Square:10*10mm-80*80mm

Rectangular:10*20mm-95*45mm

Oval: 30*15mm

(or customized)

Shape

Square tubes, round tubes, oval pipes, special shaped pipes,

empaistic pipes, fittings

Thickness

0.24mm-2.0mm

Length

6m or according to customers' request

Thickness Tolerance

Outer diameter:±0.2mm

Thickness:±0.02mm

Length:±0.5mm

Process Method

Cold drawn, Annealed with nitrogen protection, Ultrasonic welding,

Automatic shape, Polished, Packing.

Finishing

A. Satin, Matt: 180G, 240G, 320G.

B. 600# mirror

C. Hairline brushed

D. Golden or TIN titanlum plated

E. or customized.

Packing

Inner Transparent plastic bag, outside green woven bag, or customized according to customers' requests

Application

construction,decoration,industry,kitchen etc.

handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc

Ship-building and automobile manufacturing

Water transportation systems

Performance

appearance, excellent mechanical properties

Rustless, stainless, good corrosion resistance, anti-wearing, good

Test

Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT

Certification

ISO, SGS,BV.

Welding Line Type

ERW(Electrical Resistance Weld)

Delivery Detail

15~25 days, depends on customers' order quantity

 Chemical Composition of

Material of Different Grades

  Material

Composition

201

202

304

316L

430

C

≤0.15

≤0.15

≤0.08

≤0.035

≤0.12

Si

≤1.00

≤1.00

≤1.00

≤1.00

≤1.00

Mn

5.5-7.5

7.5-10

≤2.00

≤2.00

≤1.00

P

≤0.06

≤0.06

≤0.045

≤0.045

≤0.040

S

≤0.03

≤0.03

≤0.030

≤0.030

≤0.030

Cr

13-15

14-17

18-20

16-18

16-18

Ni

0.7-1.1

3.5-4.5

8-10.5

10-14

Mo

2.0-3.0

Mechanical Property

Material Item    

201

202

304

316

Tensile Strength

≥535

≥520

≥520

≥520

Yield Strength

≥245

≥205

≥205

≥205

Extension

≥30%

≥30%

≥35%

≥35%

Hardness (HV)

<105

<100

<90

<90