Flange type: Welding-Neck RTJ
WELDING NECK FLANGES are distinguished from other types by their long tapered hub and gentle transition of thickness in the region of the butt weld joining them to the pipe. The long tapered hub provides an important reinforcement of the flange proper from the standpoint of strength and resistance to dishing. The smooth transition from flange thickness to pipe wall thickness effected by the taper is extremely beneficial under conditions of repeated bending, caused by line expansion or other variable forces and produces an endurance strength of welding neck flanged assemblies equivalent to that of a butt welded joint between pipes, which, in practice, is the same as that of unwelded pipe. Thus this type of flange is preferred for every severe service condition, whether this results from high pressure or from sub-zero or elevated temperature, and whether loading conditions are substantially constant or fluctuate between wide limits.
Standard: ANSI B16.5, ANSI B16.47 Series A & B, ANSI B16.48,
API 6A 6B & 6BX, API 17D, BS4504, BS3293, DN, AS, JIS
Material:
Carbon Steel: ASTM A105, ASTM A350 LF1, LF2 CL1/CL2 LF3 CL1/CL2, ASTM
A694 F42, F46, F48, F50, F52, F56, F60, F65, F70
Stainless Steel: ASTM A182 F304/304L, F316/316L,
F316H, F316Ti, F321, F44(UNS S31254)
Alloy Steel: ASTM A182 F1, F5/a, F9, F11, F12, F22, F91
Duplex&Super Duplex Steel: ASTM A182 F51/UNS S31803, F53/UNS S32750
F55/UNS S3260
Special Alloy Steel: Monel400, Inconel 600, Inconel 625, Inconel
800, Inconel 825, Inconel C276
Size: 1/2"-84"
Types of Flanges Available: Weldnecks, Slip-Ons, Threaded, Blind,
Socketweld, Lap-Joint, Orifice, Reducing Flange and Specials.
Types of Flange Faces: Raised Face, Flat-Face, Ring Joint, Tongue &
Groove, and Male & Female.
Dingxiang CHN Flange Forging Co., Ltd. is located in the State Dingxiang named"hometown of forging", founded in 2006 invested by TianYuan(HK) International Limited be specialized in manufacturing various kinds of high quality flange and other forging.
Being a designer and manufacturer of flange and forgings in the industry. We provide both standard and customized designs in a large range of different pipeline system. Our main products include Welding Neck, Slip-on, SocketWelding, Threaded, Binld according to ANSI, DIN, JIS, EN, made of ASTM A105, A350, A694, A182, ect. Our engineers are able to design the right products to fit your application and the best solution for your requirements. The products have been wildely used in the industries of petroleum, chemical, foodstuff, metallurgy, construction, electric power and so on.
We have a 4, 000tons Hydraulic Machine and 6300 Ring Rolling Machine operating flange&ring production, the maximum outside diameter is up to 6000mm, maximum gross weight up to 6tons. Our annual production capacity of Flange is 5000tons;
We do a whole set of chemical and mechanical performance test, metallurgical structure, hardness test, NDE test, salt-fog test, film thickness test, roughness test, and the lowest temperature of impact test can be -196 degree C.
We treat Quality, Customer, Market, Upgrade as the most important.
