ASTM A234 WPB steel pipe fittings are widely used in steel pipelines, combine both carbon and alloy steel material.

Forging is the manufacturing process of ASTM a234 WPB fittings, WPB is one of the steel grades in this standard.

  • W = WELDABLE / wrought

Type of the ASTM A234 WPB steel pipe fittings

(LR) Long Radius Elbow/(SR) Short Radius Elbow

2D/3D/ 5D /10DElbow

Equal/Unequal Cross

Reducing Nipple

Butt Tee Fittings

Swedge Nipple

Concentric or Eccentric Reducer

Stub End/Cap

Pipe / Piggable Bend

astm a234 wpb fittings dimensions

Grades of ASTM A234

ASTM a234 WPB fittings have many grades, such as WPB, WPC, WP11, WP12, WP22, WP91, and so on.

In these standard Grade, WPB is the most commonly used for medium and high-temperature steel pipelines. W means weldable, P means pressure, B is grade b, refer to the minimum yield strength.

The original raw material of ASTM a234 WPB fittings may be from steel pipes, such as ASTM A106 Gr.B and C seamless steel pipe. Also from steel plate, like ASTM A285 Gr.C, ASTM A516 Gr 70, ASTM A572, etc.


Chemical Composition of ASTM A234 WPB

Grade WPB fittings made from the seamless steel pipes or plates maximum C is 0.35%.

Forging fittings Carbon content 0.35% maximum and Silicon content 0.35% maximum, no minimum.

For each reduction of 0.01 of Carbon content, Manganese maximum content increases 0.06%, up to the maximum of 1.35% for Mn.

Copper, Nickel, Niobium, and Molybdenum sum content shall not be over 1.00%.

Niobium + Molybdenum shall not exceed 0.32%.

For other grades:

a234 wpb material


For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be allowed, up to a maximum of 1.35%.
The sum of Cu, Ni, Cr, and Mo shall not be over 1.00%.
The sum of Cr and Mo shall not be over 0.32%.
The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

Mechanical Properties of ASTM A234 WPB

Tensile Strength 60,000 pis 415 Mpa
Yield Strength 35,000 psi 240 Mpa
Pressures Ratings: 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2000 LBS, 3000 LBS to 9000 LBS.

For other grades in ASTM A234:

astm a234 wpb material

A234 WPB Steel Pipe Fittings Manufacturing Processes

The manufacturing processes for A234 WPB pipe fittings include forging and shaping operations.

As well as pressing, hammering, piercing, extruding, upsetting, rolling, bending, fusion welding, and machining. Or the processes of a combination of two or more of these operations.

In very large sizes, the fittings may be manufactured in pieces and welded together as is the case for many large fittings.

ASTM A234 Pipe Fittings Manufacturing

ASTM A234 WPB Fittings Dimensions

ASTM A234 Pipe Fittings Dimensions: ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10

ASTM A234 Pipe fittings Thickness: SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75

Size Range: ½” NB to 120″ NB
CS ASTM A234 Seamless Butt Weld Fittings: 1/2″ – 24″
CS ASTM A234 gr WPB Welded Butt Weld Fittings: 1/2″ – 120″
CS ASTM A234 Two Joint / Two Halve Fittings 6” to 48”

ASTM A234 WPB Fittings dimensions

ASTM A234 WPB Pipe Fittings Application

ASTM A234 WPB Pipe Fittings are commonly used in Refineries, Food Processing & Dairy, Oil and Gas Industry, Off-Shore Oil Drilling Companies, Pharmaceutical Equipment, Pulp & Paper Industry, Power Generation, etc.

a234 wpb elbow

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