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Types
Class Rates
Socket-Welding fittings
Threaded Fittings
Branch Outlet
Material
Approx Weight
 BizVerify
Yanshan Shuntong Steel Pipe&fittings Co., Ltd.
Verified By : Huaxia D&B
Verified Date : 2010-05-08
Branch Outlet 
Correlation of Fittings Class With Schedule Number or Wall Designation of Run for Calculation of Ratings
CLASS OF FITTING TYPE BRANCH SIZE PIPE WALL FOR 
RATING BASIS
Standard Buttwelding NPS1/8-24 Standard
Extra Strong  Buttwelding NPS1/8-24 Extra Strong 
Schedule 160 Buttwelding NPS1/2-6 Schedule 160
3000 Threaded&Socket welding NPS1/8-4 Extra Strong 
6000 Threaded&Socket welding NPS1/2-2 Schedule 160
Butt Welding Outlet 
Nominal Pipe Size 
of Run Pipe
Nominal Pipe Size 
of Outlet Pipe
Face of Fititng to Crotch Outside Diameter of Fitting
DN NPS DN NPS A D1 min
STD  XS SCH160 STD XS SCH160
8-900 1/4-36 6 1/8 16 16 - 24 24 -
10-900 3/8-36 8 1/4 16 16 - 26 26 -
15-900 1/2-36 10 3/8 19 19 - 30 30 -
20-900 3/4-36 15 1/2 19 19 28 36 36 36
25-900 1-36 20 3/4 22 22 32 43 43 46
32-900 1 1/4-36 25 1 27 27 38 55 55 51
40-900 1 1/2-36 32 1 1/4 32 32 44 66 66 63
50-900 2-36 40 1 1/2 33 33 51 74 74 71
65-900 2 1/2-36 50 2 38 38 55 90 90 82
80-900 3-36 65 2 1/2 41 41 62 104 104 98
90-900 3 1/2-36 80 3 44 44 73 124 124 122
100-900 4-36 90 3 1/2 48 48   138 138 -
125-900 5-36 100 4 51 51 84 154 154 154
150-900 6-36 125 5 57 57 94 187 187 188
200-900 8-36 150 6 60 78 105 213 227 222
250-900 10-36 200 8 70 99 - 265 292 -
300-900 12-36 250 10 78 94 - 323 325 -
350-900 14-36 300 12 86 103 - 379 381 -
400-900 16-36 350 14 89 100 - 411 415 -
450-900 18-36 400 16 94 106 - 465 468 -
500-900 20-36 450 18 97 111 - 522 525 -
550-900 22-36 500 20 102 119 - 573 584 -
650-900 26-36 600 24 116 140 - 690 708 -
Socket welding Outlet 
Nominal Pipe Size
 of Run Pipe
Nominal Pipe Size 
of Outlet Pipe
Face of Fititng
 to Crotch
Outside Diameter 
of Fitting
Outside Diameter
 at End of Fitting
DN NPS DN NPS A D1 min D2 min
3000 6000 3000 6000 3000 6000
8-900 1/4-36 6 1/8 20 - 27 - 22 -
10-900 3/8-36 8 1/4 20 - 27 - 22 -
15-900 1/2-36 10 3/8 23 - 30 - 26 -
20-900 3/4-36 15 1/2 26 34 36 47 33 42
25-900 1-36 20 3/4 29 38 43 53 39 48
32-900 1 1/4-36 25 1 35 42 55 63 48 58
40-900 1 1/2-36 32 1 1/4 35 43 66 74 58 67
50-900 2-36 40 1 1/2 37 45 75 83 64 77
65-900 2 1/2-36 50 2 40 53 90 104 77 93
80-900 3-36 65 2 1/2 41 - 105 - 94 -
90-900 3 1/2-36 80 3 46 - 124 - 114 -
125-900 5-36 100 4 49 - 154 - 140 -
Threaded Outlet 
Nominal Pipe Size
 of Run Pipe
Nominal Pipe Size
of Outlet Pipe
Face of Fititng
 to Crotch
Outside Diameter
of Fitting
Outside Diameter
at End of Fitting
DN NPS DN NPS A D1 min D2 min
3000 6000 3000 6000 3000 6000
8-900 1/4-36 6 1/8 19 - 27 - 22 -
10-900 3/8-36 8 1/4 19 - 27 - 22 -
15-900 1/2-36 10 3/8 21 - 30 - 25 -
20-900 3/4-36 15 1/2 25 32 38 45 33 42
25-900 1-36 20 3/4 27 37 47 52 39 48
32-900 1 1/4-36 25 1 33 40 56 63 48 58
40-900 1 1/2-36 32 1 1/4 33 41 66 72 58 67
50-900 2-36 40 1 1/2 35 43 75 83 64 77
65-900 2 1/2-36 50 2 38 52 90 104 77 93
80-900 3-36 65 2 1/2 46 - 105 - 94 -
90-900 3 1/2-36 80 3 51 - 124 - 114 -
125-900 5-36 100 4 57 - 154 - 140 -

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