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Product Parameters

GB/T 12459, GB/T 13401, ASME B16.9

Nominal Size		End Outer Diameter	Length		Limit Thickness for Dimension E
DN	NPS	OD	E	E ₁
15 20 25	1/2 3/4 1	21.3 26.7 33.4	25 25 38	25 25 38	4.57 3.81 4.57
32 40 50	1/4 1/2 2	42.2 48.3 60.3	38 38 38	38 38 44	4.83 5.08 5.59
65 80 90 100	2^1/2 3 3^1/2 4	73.0 88.9 101.6 114.3	38 51 64 64	51 64 76 76	7.11 7.62 8.13 8.64
125 150 200	5 6 8	141.3 168.3 219.1	76 89 102	89 102 127	9.65 10.92 12.70
250 300 350	10 12 14	273.0 323.8 355.6	127 152 165	152 178 191	12.70 12.70 12.70
400 450 500	16 18 20	406.4 457.0 508.0	178 203 229	203 229 254	12.70 12.70 12.70
550 600 650	22 24 26	559.0 610.0 660.0	254 267 267	254 305 -	12.70 12.70 -
700 750 800	28 30 32	711.0 762.0 813.0	267 267 267	- - -	- - -
850 900 950	34 36 38	864.0 914.0 965.0	267 267 305	- - -	- - -
1000 1050 1100	40 42 44	1016.0 1067.0 1118.0	305 305 343	- - -	- - -
1150 1200	46 48	1168.0 1219.0	343 343	- -	- -

Note:
1) The shape of the pipe cap is a standard ellipse.
2) When the length of the pipe cap is not greater than the limit thickness, it is E; when greater than the limit thickness, it is E1. When the nominal size of the pipe cap ≥ DN650 (NPS 26), the length E1 is manufactured according to the size negotiated between the purchaser and the manufacturer, or supplied according to the manufacturer's size.

Process Flow

Production process flow and quality control chart for butt-welded welded and seamless pipe fittings.

Production process flow and quality control chart for forged pipe fittings and flanges.

Saddle Joint

Flanging

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End Cap

Professional production of various butt-welded, socket-welded, threaded series of elbows, bends, tees, reducers, flanges, lap joints, pipe caps, etc., made of austenitic stainless steel, alloy steel, carbon steel, composite materials, duplex stainless steel, titanium alloy, aluminum alloy, nickel-based alloy, copper alloy, and other materials.

Our company can manufacture according to GB, SH, HG, DL, ASME, DIN, JIS, BS and other standards, or according to drawings and requirements provided by users.

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Butt-welded pipe fittings

Product Description

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