A694 F65 & A350 LF6 CL2 ASME B16.5 Class 900 Flanges Shipped to UAE Client

Haihao Group has completed inspection and shipment of a batch of forged flanges built to ASME B16.5 Class 900 for a UAE piping project. This order combines two widely specified carbon steel grades, A694 F65 and A350 LF6 CL2, selected to match the project’s high-pressure and low-temperature design requirements.

The larger-size units are 18-inch and 20-inch RFWN flanges made of A694 F65. Each piece is machined with raised face sealing surface, with controlled bore wall thickness of 14.03 mm and 17.20 mm respectively. Every A694 F65 ASME B16.5 flange goes through heat treatment to stabilise mechanical properties, ensuring consistent yield strength and toughness under sustained Class 900 loading. This grade is a common choice for transmission pipelines and process headers across the Middle East, where designers prioritise structural integrity under cyclic pressure changes.

ASME B16.5 Class 900 RFWN and blind flanges A694 F65 A350 LF6 CL2 for UAE oil gas piping

Complementing the large bore set are smaller 2-inch flanges in A350 LF6 CL2. This lot includes a RF blind flange, a SCH 80 RFWN flange and a SCH 160 RFWN flange, all rated Class 900 and manufactured to ASME B16.5. A350 LF6 CL2 is specified for low-temperature service, offering reliable impact performance where cold ambient or process conditions are a design concern. Like the A694 F65 ASME B16.5 flange variants, these small-bore flanges are heat-treated and fully dimensionally checked before packing.

Many UAE EPC teams source mixed-grade flange packages to cover different segments within one piping network. High-strength A694 F65 handles the main trunk lines, while low-temperature A350 LF6 CL2 serves branches, isolation points and blind termination joints. All flanges in this shipment follow ASME B16.5 dimensions and raised face finish, simplifying gasket selection and field alignment for the installation crew.

Our quality team verifies material traceability, heat treatment records and dimensional tolerance for each ASME B16.5 Class 900 flange before release. We do not batch-test and assume conformity; every heat lot is documented, and MTCs are prepared to meet the strict documentation expectations of UAE energy clients. This attention to traceability is one reason contractors return to Haihao Group for repeat flange orders.

If you are sourcing ASME B16.5 Class 900 flanges for oil, gas or process piping projects in the UAE or across the GCC region, our engineering team can review your specification and quote A694 F65, A350 LF6 CL2 or other carbon and alloy grades. Send your P&ID or flange list to get a formal offer with full material certification support.