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Product Parameters

Nominal Size		End Outer Diameter	Center to End Face
DN	NPS	0D₁ ×0D ₂	C	M
15 15×10 15×8	1/2 1/2×3/8 1/2×1/4	21.3 21.3×17.1 21.3×13.7	25	25 25 25
20 20×15 20×10	3/4 3/4×1/2 3/4×3/8	26.7 26.7×21.3 26.7×17.1	29	29 29 29
25 25×20 25×15	1 1×3/4 1×1/2	33.4 33.4×26.7 33.4×21.3	38	38 38 38
32 32×25 32×20 32×15	1^1/4 1^1/4 ×1 1^1/4 ×3/4 1^1/4 ×1/2	42.2 42.2×33.4 42.2×26.7 42.2×21.3	48	48 48 48 48
40 40×32 40×25 40×20 40×15	1^1/2 1^1/2 ×1 ^1/4 1^1/2 ×1 1^1/2 ×3/4 1^1/2 ×1/2	48.3 48.3×42.2 48.3×33.4 48.3×26.7 48.3×21.3	57	57 57 57 57 57
50 50×40 50×32 50×25 50×20	2 2×1 ^1/2 2×1 ^1/4 2×1 2×3/4	60.3 60.3×48.3 60.3×42.2 60.3×33.4 60.3×26.7	64	64 60 57 51 44
65 65×50 65×40 65×32 65×25	2^1/2 2^1/2 ×2 2^1/2 ×1 ^1/2 2^1/2 ×1 ^1/4 2^1/2 ×1	73.0 73.0×60.3 73.0×48.3 73.0×42.2 73.0×33.4	76	76 70 67 64 57
80 80×65 80×50 80×40 80×32	3 3×2 ^1/2 3×2 3×1 ^1/2 3×1 ^1/4	88.9 88.9×73.0 88.9×60.3 88.9×48.3 88.9×42.2	86	86 83 76 73 70
90 90×80 90×65 90×50 90×40	3^1/2 3^1/2 ×3 3^1/2 ×2 ^1/2 3^1/2 ×2 3^1/2 ×1 ^1/2	101.6 101.6×88.9 101.6×73.0 101.6×60.3 101.6×48.3	95	95 92 89 83 79
100 100×90 100×80 100×65 100×50 100×40	4 4×3 ^1/2 4×3 4×2 ^1/2 4×2 4×1 ^1/2	114.3 114.3×101.6 114.3×88.9 114.3×73.0 114.3×60.3 114.3×48.3	105	105 102 98 95 89 86
125 125×100 125×90 125×80 125×65 125×50	5 5×4 5×3 ^1/2 5×3 5×2 ^1/2 5×2	141.3 141.3×114.3 141.3×101.6 141.3×88.9 141.3×73.0 141.3×60.3	124	124 117 114 111 108 105
150 150×125 150×100 150×90 150×80 150×65	6 6×5 6×4 6×3 ^1/2 6×3 6×2 ^1/2	168.3 168.3×141.3 168.3×114.3 168.3×101.6 168.3×88.9 168.3×73.0	143	143 137 130 127 124 121
200 200×150 200×125 200×100 200×90	8 8×6 8×5 8×4 8×3 ^1/2	219.1 219.1×168.3 219.1×141.3 219.1×114.3 219.1×101.6	178	178 168 162 156 152
250 250×200 250×150 250×125 250×100	10 10×8 10×6 10×5 10×4	273.0 273.0×219.1 273.0×168.3 273.0×141.3 273.0×114.3	216	216 203 194 191 184
300 300×250 300×200 300×150 300×125	12 12×10 12×8 12×6 12×5	323.8 323.8×273.0 323.8×219.1 323.8×168.3 323.8×141.3	254	254 241 229 219 216
350 350×300 350×250 350×200 350×150	14 14×12 14×10 14×8 14×6	355.6 355.6×323.8 355.6×273.0 355.6×219.1 355.6×168.3	279	279 270 257 248 238
400 400×350 400×300 400×250 400×200 400×150	16 16×14 16×12 16×10 16×8 16×6	406.4 406.4×355.6 406.4×323.8 406.4×273.0 406.4×219.1 406.4×168.3	305	305 305 295 283 273 264
450 450×400 450×350 450×300 450×250 450×200	18 18×16 18×14 18×12 18×10 18×8	457.0 457.0×406.4 457.0×355.6 457.0×323.8 457.0×273.0 457.0×219.1	343	343 330 330 321 308 298
500 500×450 500×400 500×350 500×300 500×250 500×200	20 20×18 20×16 20×14 20×12 20×10 20×8	508.0 508.0×457.0 508.0×406.4 508.0×355.6 508.0×323.8 508.0×273.0 508.0×219.1	381	381 368 356 356 346 333 324
550 550×500 550×450 550×400 550×350 550×300 550×250	22 22×20 22×18 22×16 22×14 22×12 22×10	559.0 559.0×508.0 559.0×457.0 559.0×406.4 559.0×355.6 559.0×323.8 559.0273.0	419	419 406 394 381 381 371 359
600 600×550 600×500 600×450 600×400 600×350 600×300 600×250	24 24×22 24×20 24×18 24×16 24×14 24×12 24×10	610.0 610.0559.0 610.0×508.0 610.0×457.0 610.0×406.4 610.0 355.6 610.0×323.8 610.0×273.0	432	432 432 432 419 406 406 397 384
650 650×600 650×550 650×500 650×450 650×400 650×350 650×300	26 26×24 26×22 26×20 26×18 26×16 26×14 26×12	660.0 660.0×610.0 660.0×559.0 660.0×508.0 660.0×457.0 660.0×406.4 660.0×355.6 660.0×323.8	495	495 483 470 457 444 432 432 422
700 700×650 700×600 700×550 700×500 700×450 700×400 700×350 700×300	28 28×26 28×24 28×22 28×20 28×18 28×16 28×14 28×12	711.0 711.0×660.0 711.0×610.0 711.0×559.0 711.0×508.0 711.0×457.0 711.0×406.4 711.0×355.6 711.0×323.8	521	521 521 508 495 483 470 457 457 448
750 750×700 750×650 750×600 750×550 750×500 750×450 750×400 750×350 750×300 750×250	30 30×28 30×26 30×24 30×22 30×20 30×18 30×16 30×14 30×12 30×10	762.0 762.0×711.0 762.0×660.0 762.0×610.0 762.0×559.0 762.0×508.0 762.0×457.0 762.0×406.4 762.0×355.6 762.0×323.8 762.0×273.0	559	559 546 546 533 521 508 495 483 483 473 460
800 800×750 800×700 800×650 800×600 800×550 800×500 800×450 800×400 800×350	32 32×30 32×28 32×26 32×24 32×22 32×20 32×18 32×16 32×14	813.0 813.0×762.0 813.0×711.0 813.0×660.0 813.0×1610.0 813.0559.0 813.0×508.0 813.0×457.0 813.0×406.4 813.0×355.6	597	597 584 572 572 559 546 533 521 508 508
850 850×800 850×750 850×700 850×650 850×600 850×550 850×500 850×450 850×400	34 34×32 34×30 34×28 34×26 34×24 34×22 34×20 34×18 34×16	864.0 864.0×813.0 864.0×762.0 864.0×711.0 864.0×660.0 864.0×610.0 864.0×559.0 864.0×508.0 864.0×457.0 864.0×406.4	635	635 622 610 597 597 584 572 559 546 533
900 900×850 900×800 900×750 900×700 900×650 900×600 900×550 900×500 900×450 900×400	36 36×34 36×32 36×30 36×28 36×26 36×24 36×22 36×20 36×18 36×16	914.0 914.0×864.0 914.0×813.0 914.0×762.0 914.0×711.0 914.0×660.0 914.0×610.0 914.0×559.0 914.0×508.0 914.0×457.0 914.0×406.4	673	673 660 648 635 622 622 610 597 584 572 559
950 950×900 950×850 950×800 950×750 950×700 950×650 950×600 950×550 950×500 950×450	38 38×36 38×34 38×32 38×30 38×28 38×26 38×24 38×22 38×20 38×18	965.0 965.0×914.0 965.0×864.0 965.0×813.0 965.0×762.0 965.0×711.0 965.0×660.0 965.0×610.0 965.0×559.0 965.0×508.0 965.0×457.0	711	711 711 698 686 673 648 648 635 622 610 597
1000 1000×950 1000×900 1000×850 1000×800 1000×750 1000×700 1000×650 1000×600 1000×550 1000×500 1000×450	40 40×38 40×36 40×34 40×32 40×30 40×28 40×26 40×24 40×22 40×20 40×18	1016.0 1016.0×965.0 1016.0×914.0 1016.0×864.0 1016.0×813.0 1016.0×762.0 1016.0×711.0 1016.0×660.0 1016.0×610.0 1016.0×559.0 1016.0×508.0 1016.0×457.0	749	749 749 737 724 711 698 673 673 660 648 635 622
1050 1050×1000 1050×950 1050×900 1050×850 1050×800 1050×750 1050×700 1050×650 1050×600 1050×550 1050×500 1050×450 1050×400	42 42×40 42×38 42×36 42×34 42×32 42×30 42×28 42×26 42×24 42×22 42×20 42×18 42×16	1067.0 1067.0×1016.0 1067.0×965.0 1067.0×914.0 1067.0×864.0 1067.0×813.0 1067.0×762.0 1067.0×711.0 1067.0×1660.0 1067.0×610.0 1067.0×559.0 1067.0×508.0 1067.0×457.0 1067.0×406.4	762	711 711 711 711 711 711 711 698 698 660 660 660 648 635
1100 1100×1050 1100×1000 1100×950 1100×900 1100×850 1100×800 1100×750 1100×700 1100×650 1100×600 1100×550 1100×500	44 44×42 44×40 44×38 44×36 44×34 44×32 44×30 44×28 44×26 44×24 44×22 44×20	1118.0 1118.0×1067.0 1118.0×1016.0 1118.0×965.0 1118.0×914.0 1118.0×864.0 1118.0×813.0 1118.0×762.0 1118.0×711.0 1118.0×660.0 1118.0×610.0 1118.0×559.0 1118.0×508.0	813	762 762 749 737 724 724 711 711 698 698 698 686 686
1150 1150×1100 1150×1050 1150×1000 1150×950 1150×900 1150×850 1150×800 1150×750 1150×700 1150×650 1150×600 1150×550	46 46×44 46×42 46×40 46×38 46×36 46×34 46×32 46×30 46×28 46×26 46×24 46×22	1168.0 1168.0×1118.0 1168.0×1067.0 1168.0×1016.0 1168.0×965.0 1168.0×914.0 1168.0×864.0 1168.0×813.0 1168.0×762.0 1168.0×711.0 1168.0×660.0 1168.0×610.0 1168.0×559.0	851	800 800 787 775 762 762 749 749 737 737 737 724 724
1200 1200×1150 1200×1100 1200×1050 1200×1000 1200×950 1200×900 1200×850 1200×800 1200×750 1200×700 1200×650 1200×600 1200×550	48 48×46 48×44 48×42 48×40 48×38 48×36 48×34 48×32 48×30 48×28 48×26 48×24 48×22	1219.0 1219.0×1168.0 1219.0×1118.0 1219.0×1067.0 1219.0×1016.0 1219.0×965.0 1219.0×914.0 1219.0×864.0 1219.0×813.0 1219.0×762.0 1219.0×711.0 1219.0×660.0 1219.0×610.0 1219.0×559.0	889	838 838 838 813 813 813 787 787 787 762 762 762 737 737
1300 1300×1200 1300×1100 13001000	52 52×48 52×44 52×40	1321.0 1321.0×1219.0 1321.0×1118.0 1321.0×1016.0	965	914 864 813 762
1400 1400×1300 1400×1200 1400×1100	56 56×52 56×48 56×44	1422.0 1422.0×1321.0 1422.0×1219.0 1422.0×1118.0	1041	965 914 864 813
1500 1500×1400 1500×1300 1500×1200	60 60×56 60×52 60×48	1524.0 1524.0×1422.0 1524.0×1321.0 1524.0×1219.0	1118	1016 965 914 864
1600 1600×1500 1600×1400 1600×1300 1600×1200	64 64×60 64×56 64×52 64×48	1626.0 1626.0×1524.0 1626.0×1422.0 1626.0×1321.0 1626.0×1219.0	1194	1092 1067 1016 965 914
1700 1700×1600 1700×1500 1700×1400 1700×1300 1700×1200	68 68×64 68×60 68×56 68×52 68×48	1727.0 1727.0×11626.0 1727.0×1524.0 1727.0×1422.0 1727.0×1321.0 1727.0×1219.0	1270	1168 1143 1118 1067 1016 965
1800 1800×1700 1800×1600 1800×1500 1800×1400 1800×1300 1800×1200	72 72×68 72×64 72×60 72×56 72×52 72×48	1829.0 1829.0×1727.0 1829.0×1626.0 1829.0×1524.0 1829.0×1422.0 1829.0×1321.0 1829.0×1219.0	1320	1245 1219 1194 1168 1118 1067 1016
1900 1900×1800 1900×1700 1900×1600 1900×1500 1900×1400 1900×1300 1900×1200	76 76×72 76×68 76×64 76×60 76×56 76×52 76×48	1930.0 1930.0×1829.0 1930.0×1727.0 1930.0×1626.0 1930.0×1524.0 1930.0×1422.0 1930.0×1321.0 1930.0×1219.0	1422	1320 1295 1270 1245 1219 1168 1118 1067
2000 2000×1900 2000×1800 2000×1700 2000×1600 2000×1500 2000×1400 2000×1300 2000×1200	80 80×76 80×72 80×68 80×64 80×60 80×56 80×52 80×48	2032.0 2032.0×1930.0 2032.0×1829.0 2032.0×1727.0 2032.0×1626.0 2032.0×1524.0 2032.0×1422.0 2032.0×1321.0 2032.0×1219.0	1499	1397 1372 1346 1321 1295 1270 1219 1168 1118

Note:
1) In addition to the above standards, manufacturing can also follow standards such as GB/T10752, SH 3408, SH 3409, HG/T21635, HG/T 21631, SY/T 0510, DL/T 695, EN 10253, etc.
2) For equal diameter tees and crosses >DN650 (NPS 26), and reducing tees and crosses ≥DN 350 (NPS14), export size M is recommended but not mandatory.
3) Larger size tees and crosses shall be manufactured according to the dimensions agreed upon by the purchaser and manufacturer, or supplied according to the manufacturer's dimensions.

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.

180° Elbow

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Equal Diameter Tee

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

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