Ground joint hose coupling set (BOSS) incorporates a spud adapter, threaded wing nut and a hose stem, with hard sealing no rubber gasket involved. Basic material is carbon steel Q235 coated with zinc plating.

Recommendation has it that it shouldn't be used in any pressurized application, nor above temperature over 230°C.

We have had them inspected in X-ray penetration tests at SGS laboratory, ensuring zero leakage is possible through the coupling bodies in purpose of transferring steam. Check with our sales for more information.

xraytestgroundjointcoupling

SIZEQ235Q235

NPTBSPP
DN15 1/2"081113.3081113
DN20 3/4"081114.3081114
DN25 1"081115.3081115
DN32 1¼"081116.3081116
DN40 1½"
081117
DN50 2"081118.3081118

Thread spud of female NPT by outside NPSM, or double male NPT spud is made of carbon steel Q235 coated with zinc plating.

SIZEQ235
F1/2"×M1"081133
F3/4"×M1½"081134
F1"×M1½"081135
F1¼"×M2"081136
F1½"×M2"081137
F2"×M2½"081138
M3/4"×M3/4"081153
M1"×M1"081154
M1¼"×M1¼"081155
M1½"×M1½"081156
M2"×M2"081157

Wing nut with female NPSM thread is made of carbon steel Q235 coated with zinc plating.

SIZEQ235
DN15×1"081143
DN20×1½"081144
DN25×1½"081145
DN32×2"081146
DN40×2"081147
DN50×2½"081148

Male threaded stem is made of carbon steel Q235 coated with zinc plating.

SIZEHOSEQ235Q235
NPTBSPT
DN10×3/8" 081212081212.5
DN15×1/2" φ8 081213 081213.5
DN20×3/4" φ10 081214 081214.5
DN25×1" φ13 081215 081215.5
DN32×1¼" φ19 081216 081216.5
DN40×1½" φ25 081217 081217.5
DN50×2" 081218 081218.5

2-piece clamp with bolts and nuts carbon steel Q235 coated with zinc plating. They are processed by investment casting with X-RAY passed certification.

Two to six sets of bolts and nuts of grade 4.8 or 8.8 are used to different sizes and ranges. Check with our sales for details.

SIZEHOSEBOLT (EA)Q235Q235
4.8 8.8
DN15 1/2"φ24./27.02082004082004.1
DN20 3/4"φ29.5/35.22082006082006.1
DN20 3/4"φ30.0/33.02082007082007.1
DN20 3/4"φ33.0/38.02082008082008.1
DN20 3/4"φ38.0/43.02082009082009.1
DN25 1"φ38.9/45.24082012082012.1
DN25 1"φ43.0/49.04082013082013.1
DN32 1¼"φ45.5/53.04082018082018.1
DN32 1¼"φ54.0/60.04082019082019.1
DN40 1½"φ55.5/60.04082024082024.1
DN40 1½"φ60.0/65.04082025082025.1
DN50 2"φ63.5/70.64082030082030.1
DN50 2"φ70.0/78.04082031082031.1
DN80 3"φ96.5/103.04082040082040.1
DN100 4"φ133.5/142.06082047082047.1