Material

304:0cr18ni9, 0cr17ni8

201:1cr17mn6ni5n,1cr13mn9ni1n

316:0cr17ni12 or as customer’s request

Size(round pipe)

9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 318, 35, 

60, 63.5, 73, 76.2, 88.9, 101.6, 

114.3, 127, 133, 159, 168, 219 mm or customized

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 or customized

Size (oval pipe)

30×15,80×40 mm os customized

Thickness

0.24-3 mm

Length 

6m or according to customer’s request

Outer diameter

6.35-219mm

Tolerance 

Outer diameter :±0.2mm

Thickness :±0.02mm

Length :±0.5mm

Process method

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

Finishing 

A: sanded  B: 400#-600# mirror  C: hairline brushed  D: TIN titanlum

E : HL brushed & mirror (two kinds of finishing for one pipe) 

American standards:

ASTM A249: Standard specification for welded austenitic steel boiler,superheater, heat-exchanger and condenser tubes.

ASTM A269:Standard specification for welded austenitic stainless steel tubing for general service

ASTM A688:Standard specification for welded austenitic stainless steel feedwater heater tubes.

ASTM A554:Standard specification for welded stainless steel mechanical tubing.

ASTM A268:Specification for seamless and welded Ferritic/Martensitic stainless steel tubing for General Service

ASTM A789:Specification for seamless and welded Ferritic/Austenitic stainless steel tubing for General Service

ASTM A312:Seamless/Welded austenitic stainless steel pipe

European Standard:

EN 10217-7:Welded Steel Tubes for pressure purposes-Part 7 Stainless steel tubes

Germanic standards:

DIN17455:General purpose welded circular stainless steel tubes

DIN17457: Welded circular austenitic stainless steel tubes subject to special requirements; technical delivery conditions