Kasugai Shanghai Co., Ltd.
                                                                                                           
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Tools & Hardware Pipe Fittings

ASME B16.11 Stainless Steel Socket Weld & Threaded Half Coupling 1/8" to 4" Size Range 3000LBS to 9000LBS Pressure Rating

Price Negotiable
Price: PER BASE MATERIAL PRICE
MOQ: TO BE NEGOTIATED
Delivery Time: 60 DAYS FOR ONE CONTAINER
Brand: KASUGAI
Product Description
ASME B16.11 Stainless Steel High Pressure Socket Weld & Threaded Half Coupling
Product Specifications
Product Name ASME B16.11 Forged Fittings High Pressure Fitting
Size Range 1/8" to 4"
Standards ANSI/ASME B1.20.1 (Thread Type), ASME B16.11
Fitting Type Socket-Welding (SW) Half Coupling, Threaded (THD) Half Coupling
Pressure Class Threaded End: 3000LBS, 6000LBS
Socket Welding End: 3000LBS, 6000LBS, 9000LBS
Finish Galvanized, Black (Carbon), Pickled
Product Overview

The ASME B16.11 half coupling is a forged fitting designed for connecting small-bore screwed (THD) or socket-weld (SW) pipe to large-bore main run pipes (headers). These couplings feature different construction and functionality compared to full couplings, with only one end furnished with either socket welding or internally threaded structure.

Key Features
  • SW half couplings available in Class 3000, 6000, and 9000 pressure ratings
  • Threaded half couplings available in Class 3000 and 6000 pressure ratings
  • SW half couplings typically have larger overall length than SW full couplings
  • Threaded half couplings measure approximately half the length of threaded full couplings
  • Two common installation methods for branch connections
Installation Methods

Half couplings can be installed using two primary methods: (1) The half coupling rests on the external surface of the pipe header and is welded from the outside. (2) A hole is bored into the pipe header large enough to accept the OD of the half coupling, which is then inserted and welded.

Socket Weld Half Coupling Dimensions (mm)
ASME B16.11 Socket Weld Half Coupling dimensional diagram
NPS B max. B min. J min. F min
1/8"11.210.89.516.0
1/4"14.614.29.516.0
3/8"18.017.69.517.5
1/2"22.221.89.522.5
3/4"27.627.212.524.0
1"34.333.912.528.5
1-1/4"43.142.712.530.0
1-1/2"49.248.812.532.0
2"61.761.216.041.0
2-1/2"74.473.916.043.0
3"90.389.816.044.5
4"115.7115.219.048.0
Socket Wall Thickness (C) Dimensions
NPS 3000# 6000# 9000#
C max. C min. C max. C min. C max. C min.
1/8"3.183.183.963.43--
1/4"3.783.304.604.01--
3/8"4.013.505.034.37--
1/2"4.674.095.975.189.358.18
3/4"4.904.276.966.049.788.56
1"5.694.987.926.9311.389.96
1-1/4"6.075.287.926.9312.1410.62
1-1/2"6.355.548.927.8012.7011.12
2"6.936.0410.929.5013.8412.12
2-1/2"8.767.67----
3"9.528.30----
4"10.699.53----
Bore Diameter (D) Dimensions
NPS 3000# 6000# 9000#
D max. D min. D max. D min. D max. D min.
1/8"7.66.14.83.2--
1/4"10.08.57.15.6--
3/8"13.311.89.98.4--
1/2"16.615.012.511.07.25.6
3/4"21.720.216.314.811.810.3
1"27.425.921.519.916.014.4
1-1/4"35.834.330.228.723.522.2
1-1/2"41.640.134.733.228.727.2
2"53.351.743.642.138.937.4
2-1/2"64.261.2----
3"79.476.4----
4"103.8100.7----
General Note: all dimensions are in millimeter
Notes: B: Socket bore diameter; C: socket wall thickness; D: bore diameter of SW half coupling; J: socket depth; F: laying length of SW half coupling
Threaded Half Coupling Dimensions (mm)
ASME B16.11 Threaded Half Coupling dimensional diagram
NPS B L 2 D 3000# D 6000# W/2
1/8"6.46.7162216
1/4"8.110.2192517.5
3/8"9.110.4223224
1/2"10.913.6283824
3/4"12.713.9354425.5
1"14.717.3445730
1-1/4"17.018.0576433.5
1-1/2"17.818.4647639.5
2"19.019.2769243
2-1/2"23.628.99210846
3"25.930.510812754
4"27.733.014015960.5
General Note: all dimensions are in millimeter
Note: B: minimum length of perfect thread; L2: effective length of external thread; D: outside diameter; W/2: end to end length of threaded half coupling.

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Company Kasugai Shanghai Co., Ltd.
Location Rm.8415, Bldg. A8, No. 808 Hongqiao Road, Xuhui District, Shanghai 200030, Chia
Contact Person Chovy kasugai

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