Question 1

What is a Weld Neck Flange?

Accepted Answer

High structural strength, deformation-resistant, reliable sealing. Suitable for high-temperature, high-pressure, and large temperature/pressure fluctuation services. It conforms to ASME B16.5 / B16.47, EN 1092-1 Type 11, JIS B2220 WN, GB · HG.

Question 2

Which standards does the WN Weld Neck Flange comply with?

Accepted Answer

Our WN flanges are manufactured to ASME B16.5 / B16.47, EN 1092-1 Type 11, JIS B2220 WN, GB · HG. All flanges are third-party inspected and shipped with EN 10204 3.1 mill certificates.

Question 3

What materials are available for WN flanges?

Accepted Answer

Carbon steel (ASTM A105 / A350 LF2 / Q235A / 20#), stainless steel (304 / 316 / 316L), low-temperature alloys (16MnDR for -46°C), and duplex on request.

Question 4

What sealing faces (facings) are available?

Accepted Answer

Standard facings: RF, FF, RTJ, T&G, M&F. Other faces (RTJ, T&G, M&F) available on request.

Question 5

What is the lead time for a WN flange order?

Accepted Answer

Standard sizes 1/2"–24" ship in 15–25 days. Large-bore (B16.47) and special materials ship in 30–45 days. Sea freight to Middle East ports: 14–30 days.

Question 6

Do you provide mill test certificates and third-party inspection?

Accepted Answer

Yes. EN 10204 3.1 mill certificates are included with every shipment. Third-party inspection (SGS / BV / TUV) is available on request.

Weld Neck Flange · WN