Threaded Flanges

Description: The threaded flange is similar to the slip-on flange, but the bore is threaded. Its chief merit is that it can be assembled without welding, explaining its use in low pressure services at ordinary atmospheric temperatures and in highly explosive areas where welding create a hazard.

Standards:  ASME/ANSI B16.5/B16.36/B16.44/B16.47/B16.48, DIN2527/DIN2566/DIN2573, JIS B2220, BS 4504, BS10, EN 1092-1, UNI 2276/2277, AS 2129/4087, MSS SP44, etc.
Materials and Grades:
Carbon Steel: 
ASTM A105(N)
ASTM A234 WPB/WBC
ASTM A420 WPL3/WPL6
ASTM A694 F42/F46/F52/F56/F60/F65/F70
ASTM A350 LF2/LF3
Stainless Steel:  ASTM A182 F304/F304L/F316/F316L/F316Ti/F321/F321H,etc.
Duplex Stainless Steel:  ASTM A182 F51/UNS S31803, F53/UNS S32750, F55/UNS S32760, etc.
Alloy Steel:  A182 F1/F5/F5a/F9/F11/F12/F22/F91

Sizes:  1/2"- 80" (DN15-DN2000)
Pressure Grade:  150LBS/300LBS/600LBS/900LBS/1500LBS/2500LBS
Facing:  RF(raised face), FF (flat face), MF (Male and Female), TG(tongue and groove face), RTJ (ring type joint)
Surface Treatment:  yellow/black lacquer or transparent oil coated to prevent corrosion
Packing:  wooden boxes or wooden pallets, seaworthy, according to customer's requirement
Application:  Flanges are widely used in petroleum, natural gas, water supply and sewage work, shipbuilding, chemical industry, pipe projects, etc.
Note:   special design available according to customer's drawing

We are able to supply flanges with different standards as follows:
a ) American Standards:
ANSI B16.5/API605, 6A, 6B/MSS SP44/AWWA C207
b ) German Standards:
DIN2527/2528/2561/2565/2566/2573/2576/2627-2630/2641/2642/2655/ 2656/2673/86029/86030
c ) British Standards:
BS 4504 PN16,PN25,PN40/BS10 TABLE E/TABLE D
d ) Japanese Standards:
JIS/KS 5K, 10K, 16K, 20K, 30K
e ) Italian Standards:
UNI2253/2254/2276-2278/2281-2284/6083/6084/6089-6093
f ) Non-standard or special Flange:
We can manufacture the flanges according to customers' drawing or sample with maximum outer diameter 5000mm and unit weight under 4 tons.