Question 1

What is a Blind Flange?

Accepted Answer

No center bore; used to seal off pipe or vessel openings. It conforms to ASME B16.5 / B16.47, EN 1092-1 Type 05, JIS B2220 BL, GB · HG.

Question 2

Which standards does the BL Blind Flange comply with?

Accepted Answer

Our BL flanges are manufactured to ASME B16.5 / B16.47, EN 1092-1 Type 05, JIS B2220 BL, GB · HG. All flanges are third-party inspected and shipped with EN 10204 3.1 mill certificates.

Question 3

What materials are available for BL 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 BL 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.

Blind Flange · BL