ASTM A420 WPL6 Butt Weld Fittings

On July 16, 2025, our domestic customer placed several orders with us. This order is for ASTM A420 WPL6 butt weld fittings. These fittings are primarily used in low-temperature and high-pressure piping systems. Made of materials that meet the WPL6 standard, they maintain excellent toughness and pressure resistance even in low-temperature environments. We rigorously inspect each fitting for dimensions and chemical composition to ensure full compliance with ASTM A420 WPL6 specifications. Furthermore, the surface treatment is rust-proofed to facilitate transportation and installation. This order is expected to be completed within the agreed delivery date, further solidifying the customer’s trust in our product quality and service.

Product List

ITEM	DESCRIPTION	QUANTITY	UNIT
2	TEE 33.4(4.5)×33.4(4.5)×21.3(3.7) BW A420-WPL6 ASME B16.9 SCH80×SCH80	8	Piece
3	ELBOW 26.7×3.9 90 BW LR A420-WPL6 ASME B16.9 SCH80	15	Piece
6	TEE 48.3(5.1)×48.3(5.1)×21.3(3.7) BW A420-WPL6 ASME B16.9 SCH80×SCH80	6	Piece
10	CAP φ114.3×6.0 BW A420-WPL6 ASME B16.9 SCH40	2	Piece
11	ELBOW 48.3×5.1 90 BW LR A420-WPL6 ASME B16.9 SCH80	2	Piece
12	ELBOW 33.4×4.5 90 BW LR A420-WPL6 ASME B16.9 SCH80	2	Piece
17	TEE 88.9(5.5)×88.9(5.5)×48.3(5.1) BW A420-WPL6 ASME B16.9 SCH40×SCH80	2	Piece

Inspection of Butt Weld Fittings

Outer Diameter (OD) and Wall Thickness (WT) Measurement

Measure the outer diameter and wall thickness of the pipe fittings using a vernier caliper, outside micrometer, or ultrasonic thickness gauge. Verify that the pipe fittings comply with the tolerance ranges specified by ASTM, ASME, or customer requirements.

Length (L) and End Dimension Inspection

Measure the overall length of the pipe fitting and the length of the end mating surfaces to ensure proper alignment during welding or connection.

End Face Perpendicularity and Flatness

Use a straightedge or protractor to check if the end face is perpendicular to the pipe axis to ensure proper sealing during welding.

Measure the end face flatness to prevent welding stress concentration or missed welds.

Angle and Bending Radius (for Elbows)

For elbows, reducers, and other fittings, use a protractor or elbow gauge to verify that the angle and radius meet design standards.

Specification of ASME B16.9 Butt Weld Fitting

Size Range	1/2″ – 80″ / DN15 – 2000
Thickness Schedule	SCH 10, 20, 40, STD, XS, 80, 100, 120, 140, 160, XXS
Standard	ANSI / ASME B16.9, MSS SP 43, JIS B2311/2312/2313, EN10253
Carbon Steel Grades	ASTM A234 WPB/WPC, A420 WPL6, A860 WPHY 42 / 46 / 56 / 60 / 65
Alloy Steel Grades	ASTM A234 WP11 / WP12 / WP5 / WP9 / WP91 / WP92,15CrMoG, 12Cr1MoVG, 12Cr5Mo, 1Cr5Mo, Cr9Mo, 10CrMo910, 12CrMo4-5
Stainless Steel Grades	ASTM A403 WP304/304L/304H, 316/316L, 310S, 317, 347, 904L
Duplex Stainless Steel Grades	ASTM A815 S32205, S31803, 32750, 32760