API 5L Gr.B pipes

We are manufacturer of API 5L Gr.B Pipes and supply high quality API 5L Gr.B Pipes in both large and small quantities worldwide &
offer you the best prices in the market.
We have a team of experienced professionals with years of experience in manufacturing.

API 5L Gr.B Pipes Specification

Grade: A53,A106,A179,A192,ST35.8,ST37,ST42,ST52,E235,E355,S235JRH, S275JR, S355JOH, P235TR1, 10#, 20#, 45#, Q235, Q345

Length: 5.8 meters for 20′ container, 6 meters to 12 meters for 40′ container

Outer Diameter: 1/8”(10.3mm) to 36”(914.4mm)

Specification: ASTM,DIN,EN,JIS,BS,API,GB

Technique: Seamless

Thickness: SCH5(0.28mm) to XXS(59.54mm)

Third Party Inspect: BV, CE, SGS, Lloyds, DNV, CCS

Specification API 5L NPS 1/8 — 26
Scope Covers WELDED and SEAMLESS pipe suitable for use in conveying gas and oil industry.
Kinds of Steel Permitted For Pipe Material Open-hearth

Basic-oxygen

Electric-furnace

Hot-Dipped Galvanizing May be ordered galvanized.
Permissible Variations in Wall Thickness
Grade A, B, A25 X42 through X80
NPS 2 1/2 and smaller — Seamless and welded, % +20 — 12.5 +15 — 12.5
NPS 3 — Seamless and welded, % +18 — 12.5 +15 — 12.5
NPS 4 through 18 — Seamless and welded, % +15 — 12.5 +15 — 12.5
NPS 20 and larger — Welded, % +17.5 — 10.0 +19.5 — 8.0
NPS 20 and larger — Seamless, % +15.0 — 12.5 +17.5 — 10.0

Chemical Requirements

C max % Mn max % P max % S max %
Seamless or ERW
Grade A 0.25 0.95 0.05 0.06
Grade B 0.30 1.20 0.05 0.06
Continuous-weld 0.08 0.06

Hydrostatic Testing

Lists hydrostatic inspection test pressures for all sizes and grades covered by the specification Test Pressures are held for not less than:

Seamless (all sizes) — 5 seconds

Welded (NPS 18 and smaller) — 5 seconds

(NPS 20 and larger) — 10 seconds

Permissible Variations

in Weights per Foot

For each length of Standard Weight, Regular Weight,

For Special Plain End — Not more than plus 10% minus 5%.

Extra Strong, and Double Extra Strong — Not more than
plus 10% minus 3.5%.

For Carload Lots — Not more than minus 1.75%.

Permissible Variations in Outside Diameter Outside Diameter

at any point shall not vary from standard specified more than:

Sizes Over Under
NPS 1 1/2 and smaller 1/64″ 1/32″
NPS 2 through 4 1% 1% (Buttweld Only)
NPS 2 through 18 .75% .75%
NPS 20 through 26
Non-expanded 1% 1%
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