ASTM A420 covers wrought carbon steel and alloy steel fittings of seamless and welded construction for use in pressure piping and pressure vessel service at low temperatures. ASTM A420 are available in four several grades: WPL6, WPL9, WPL3, WPL8, the commonly used grades are WPL6 and WPL9. Grade WPL6 pipe fitting can be made from ASTM A333 Gr5, seamless steel pipe, ASTM A516 Gr65steel plate, and ASTM A671 Gr. CC65 welded pipe. WLD steel manufacture a variety of ASTM A420 Pipe Fittings at the most attractive price as per customer requirements and we are supplying a comprehensive range of ASTM A420 WPL 6 Short Radius Elbow, Bend, Long Radius Bends, Tee, Equal Tee, Reducing Tee, Cross, Reducer, Concentric Reducer, Eccentric Reducer, Pipe End Caps for the low-temperature solutions.

Dimensions: ANSI/ASME B16.9, B16.28, MSS-SP-43.

Thickness:  Sch 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160 Sch XXS.

Grade: ASTM A240 WPL6;

Size:  Seamless ½” to 24”, Welded ½” to 24”, Two Joint / Two Halve Fittings 6” to 48”;

Products: Long Radius Elbow, Short Radius Elbow, Bend, Long Radius Bends, Tee, Equal Tee, Reducing Tee, Cross, Reducer, Concentric Reducer, Eccentric Reducer, Pipe End Caps.

Chemical Composition(Product analysis)

C	Mn	P	S	Si	Ni	Cr	Mo	Cu	Cb
≤0.30	0.50-1.35	≤0.035	≤0.040	0.15-0.40	≤0.40	≤0.30	≤0.12	≤0.40	≤0.02

Mechanical requirements

Yield strength, min, MPA: 415-585

Tensile strength, min, MPA: 240

Elongation	Lengthways	Crosswise
The minimum value for standard round or small size samples with 4D mark spacing	22	12
Rectangular samples with wall thickness of 7.94mm and above, and all samples of small size tested under the full section, with a spacing of 50mm	30	16.5
For rectangular samples with wall thickness below 7.94m, the standard distance is 50mm (sample width is 12.7mm), and the decreasing number based on the standard value	1.5	1.0

Heat treatment

All pipe fittings shall be supplied in normalizing, normalizing and tempering, annealing or hardening and tempering conditions. The welding shall be completed prior to the austenitizing heat treatment. It can also simulate post-weld heat treatment. Simulated post-weld heat treatment temperature: 595 — 650 °C. Minimum holding time: 1h/25mm, not less than 45 minutes.