Pipe Grades
Pipe Grades
- Grades

Specification and Size Range Where Indicated |
Type |
Grades |
Tensiles |
Scope |
A-120 (has been withdrawn) NPS 1/8 - 16 |
CW ERW SMLS |
None Specified |
None Specified |
Blk & Galv Welded & SMLS pipe for ordinary use - not Intended for close coiling bending or high temperature service |
A-53 NPS 1/8 - 26 |
CW - Type F ERW - Type E SMLS - Type S |
CW - Type F ERW & SMLS Grade A & B |
MIN. P.S.I. Grade Yield Tensile C W 25,000 45,000 GR-A 30,000 48,000 GR-B 35,000 60,000 |
Blk & Galv Welded & SMLS pipe suitable for welding and forming operations CW not intended for flanging. Grade B not intended for close coiling or severe cold forming. |
A-106 NPS 1/8 - 26 |
SMLS |
Grades A, B & C |
MIN P.S.I. Grade Yield Tensile A 30,000 48,000 B 35,000 60,000 C 40,000 70,000 |
SMLS for high temperature service. Suitable for bending, flanging, and similar forming operations. |
A-135 NPS 2-30 |
ERW |
Grades A & B |
MIN. P.S.I. Grade Yield Tensile A 30,000 48,000 B 35,000 60,000 |
Electric resistance welded for conveying fluid, gas or vapor |
A-252 NPS 6 - 24 |
ERW SMLS DSAW |
Grades 1, 2, 3 |
MIN. P.S.I. Grade Yield Tensile 1 30,000 50,000 2 35,000 60,000 3 40,000 66,000 |
ERW or SMLS for Pipe Piles |
A-333 |
SMLS ERW |
1, 3, 4, 6, 7, 8, 9 |
MIN. P.S.I. Grade Yield Tensile 1 30,000 50,000 2 35,000 65,000 3 35,000 60,000 6 35,000 60,000 7 35,000 65,000 8 75,000 100,000 9 46,000 63,000 10 65,000 80,000 11 35,000 65,000 |
SMLS & Welded Carbon & Alloy Steel pipe for low temperature service |
A-335 NPS 1/8 - 26 |
SMLS |
P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P91 |
MIN. P.S.I. Grade Yield Tensile P1 30,000 55,000 P2 30,000 55,000 P-91 60,000 85,000 All Others 30,000 60,000 |
SMLS Alloy Steel Pipe for high temperature service |
A-501 Round |
SMLS Welded |
None Specified |
MIN. P.S.I. Yield Tensile 36,000 58,000 |
Hot Formed Welded & SMLS Round, Square & Rectangular Tubing |
A-587 NPS 1/2" - 10 |
ERW |
None Specified |
MIN. P.S.I. Yield Tensile 30,000 48,000 |
EW Pipe for process lines suitable for severe forming involving flanging and close bending |
A-589 Type 1 NPS 6-16 |
Type 1 SMLS or Welded |
Type 1 A or B |
MIN. P.S.I. Grade Yield Tensile C W 25,000 45,000 A 30,000 48,000 B 35,000 60,000 |
SMLS & Welded Water Pipe Type 1 Drive Pipe |
Type II NPS 1-12 Type III NPS 1-2 Type IV NPS 3-8 |
Type II SMLS, ERW or CW Type III SMLS, ERW or CW Type IV SMLS, ERW or CW |
Type II A or CW Type III A or CW Type IV A or CW |
MIN. P.S.I. Grade Yield Tensile C W 25,000 45,000 A 30,000 48,000 B 35,000 60,000 |
Type II Water well reamed and drifted Type III Driven well pipe Type IV Water well casing |
API 5L |
CW, ERW, SMLS DSAW |
CW Grade 25 DSAW ERW & SMLS Grades A & B |
MIN. P.S.I. Grade Yield Tensile A-25 25,000 45,000 A 30,000 48,000 B 35,000 60,000 |
Welded and SMLS Line pipe |
API 5LX |
ERW & SMLS DSAW |
X-42 X-46 X-52 X-60 X-65 X-70 X-80 |
MIN. P.S.I. Grade Yield Tensile X-42 42,000 60,000 X-46 46,000 63,000 X-52 52,000 66,000 X-60 60,000 75,000 |
Welded and SMLS High test line pipe |
