ASTM A312 TP304L Welded Stainless Steel Pipe

We offer welded stainless steel pipe complying with ASTM A312 specification, intending for high-temperature and general corrosive service, TP304L stainless steel is low carbon TP304 grade, having excellent corrosion resistance, pipe size range as ANSI B36.10, ANSI B36.19.

ASTM A312 TP304L Welded Pipe Specification

  • Specification:ASTM A312
  • Grades: TP304L
  • NPS: 1/8″ – 24″
  • Schedule: Sch 5 to Sch 160
  • Length: max 22000 mm
  • Ends: Plain ends, bevelled ends
  • Finishing: Annealing pickling, as welded
  • Form: Round
  • Application: Liquid renasportaion, pressure equipment

ASTM A312 TP304L Chemical Composition

Grade C Si Mn Cr Ni S P
TP304L 0,035 1,0 2 18 – 20 8 – 13 0,03 0,045

ASTM A312 TP304L Mechanical Properties

Tensile strength(Mpa) min Yield strength(Mpa) min Elongation(%)
TP304L 485 170 35

ASTM A312 covers seamless, straight-seam welded, and heavily cold worked welded stainless steel pipe, when larger diameter welded pipes, welding two longitudinal sections is allowed.

ASTM A312 Welded Stainless Steel Pipe Tolerance

OD tolerance WTH(mm)
10.3-48.3 +0.40/-0.80 +/-12.5%t
>48.3-114.3 +0.80/-0.08
>114.3-219.1 +1.60/-0.80
>219.1-457.2 +2.40-0.80
>457.2-660.4 +3.20/-0.80
>660.4-864 +4.00/-0.08
>864-1219.2 +4.80/-0.08

Testing and Inspection for Welded Pipe:

  • Mechanical Tests
  • Grain Size Determinations
  • Weld Decay Tests
  • Transverse or Longitudinal Tension Test
  • Flattening Test
  • Grain Size
  • Hydrostatic or Nondestructive Electric Test
  • Flattening Test(option)
  • Radiographic Examination(option)
  • Intergranular Corrosion Test(option)
  • 316L stainless steel welded pipe
  • A312 304 304L Welded Stainless Steel Pipe
  • A312 seamless stainless steel pipe