Screwed steel pipe flange

Screwed Steel Pipe Flange (also known as Threaded Steel Pipe Flange) is a versatile pipe connection component designed for small-to-medium diameter pipelines, featuring internal/external threaded connections that eliminate the need for welding, complying with ANSI/ASME, GB, BSP, or NPT international standards.

Description

Core Advantages

  • Threaded connection enables quick, tool-friendly installation and disassembly, reducing on-site construction time and maintenance costs.
  • Compact structure saves space, ideal for narrow working environments and small-bore pipelines (typically DN10-DN80).
  • Available in carbon steel, stainless steel, and alloy steel materials, offering reliable corrosion resistance and pressure-bearing capacity for low-to-medium pressure systems.
  • Complies with global thread standards, ensuring strong interchangeability with international pipelines, valves, and fittings.

Application Scenarios

Widely used in water supply and drainage, HVAC, instrumentation, chemical, power, and municipal engineering systems. It reliably connects small-diameter pipes carrying water, steam, oil products, natural gas, and general industrial fluids, suitable for low-to-medium pressure scenarios where welding is not feasible or convenient.

Additional information

Size

DN10, DN15, DN20DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150

nominal pressure

PN6, PN10, PN16, PN25, PN40

Sealing Face Type

Raised Face (RF), Male-Female Face (MFM), Tongue and Groove Face (TG), Ring Joint Face (RJ)

Material

Carbon Steel: ASTM A105, 20#, Q235, 16Mn, 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, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;

Manufacturing Standard

ANSI B16.5, HG20619-1997, GB/T9117.1-2000—GB/T9117.4-2000, HG20597-1997

Production Process

Professional integral forging, forging and pressing, etc.

Processing Method

High-precision CNC lathe turning, ordinary lathe fine turning, TIG welding (Tungsten Inert Gas Welding), etc.