Weld Neck Flanges Manufacturer

Weld Neck Flanges

Engineered for High-Pressure & Critical Service

Weld Neck Flanges feature a long tapered hub and are connected to the pipe by butt welding, providing excellent strength and stress distribution.

Designed for high-pressure, high-temperature and low-temperature applications, the tapered hub provides a smooth transition between flange and pipe. The matching bore helps maintain unrestricted flow while reducing turbulence and erosion.

STELVERA FORGE S.p.A. manufactures Weld Neck Flanges in a wide range of sizes, pressure classes and material grades, with special dimensions available to project specifications.

Weld Neck Flange

Dimensions

B16.5 / B16.47
½” – 36″
150# – 2500#
Series A & Series B

Primary Alloys Inventoried

Hastelloy – C276, B3, C22, C-2000, G-30, 230
Alloy 20, 200/201, 400, 600, 601, 625, 800HT, 825
AL6XN (N08367), 904L, 310, 317L, 321, 347
Duplex Stainless – 2205, 2507, 255
Titanium – Grades 2, 7, and 12
Aluminum Grades – 1100, 3003, 6061 and 5083
Chromes-Moly – F-5, F-9, F-11 and F-22

Other material available upon request

Compliance and Certifications

ISO 9001: 2015, PED 2014/68/EU, NACE, EN 10204 3.1

Weld Neck