Mixed Grade ASME B16.9 Butt Weld Fittings for Russia Piping Project

This shipment assembled for our Russian client brings together three distinct material grades of seamless butt weld fittings, all manufactured to ASME B16.9. The project combines alloy, low-temperature carbon steel and stainless steel components, each with separate heat treatment and Charpy impact requirements to match varied operating conditions across the piping loop.

The alloy component is an eccentric seamless butt weld reducer sized 114.3×6.02 mm down to 60.3×5.54 mm, made of ASTM A234 WP11 CL1. This A234 WP11 ASME B16.9 fitting is widely used for moderate high-temperature process lines, and receives controlled heat treatment to achieve the required mechanical properties. The specification also calls for impact toughness of 27J at -20℃, a requirement we verify with separate test coupons from the same heat lot.

ASME B16.9 seamless butt weld eccentric reducer, tee and LR elbow A234 WP11 A420 WPL6 A403 WP304 for Russia piping

For sections exposed to much colder service, we supplied a seamless reducing tee in ASTM A420 WPL6, dimension 168.3×7.11 mm × 114.3×6.02 mm. This A420 WPL6 ASME B16.9 fitting is heat treated and tested to hit 27J at -52℃. Low-temperature Charpy validation is critical for Russian installations, where ambient and process temperatures can drop sharply, raising the risk of brittle fracture in unqualified carbon steel fittings.

Rounding out the order are stainless steel seamless butt weld fittings in ASTM A403 WP304. The set includes a 60.3×3.91 mm 90° long radius elbow and a reducing tee of 114.3×3.05 mm × 60.3×2.77 mm. This A403 WP304 ASME B16.9 fitting suits corrosive process streams, offering stable corrosion resistance without extra coating. All stainless steel pieces are machined and inspected to ASME B16.9 wall thickness and end preparation rules.

Packing mixed-grade fittings in one consolidated shipment helps Russian EPC teams simplify receiving and inventory management. Each grade serves its own section: WP11 for heat service, WPL6 for cold service, and WP304 for corrosion control. Our QC team keeps material lots fully separated, with clear marking and full MTC packages that list heat treatment records and impact test values for each material.

Before dispatch, every fitting goes through dimensional check, material verification and visual inspection. We make sure the bevel preparation, wall thickness tolerance and surface finish align with ASME B16.9, so field welding crews can fit the parts smoothly on site.

Haihao Group regularly supplies grouped butt weld fitting packages for Russian oil, gas and chemical piping projects. If you need a mix of alloy, low-temperature carbon steel or stainless steel fittings with defined Charpy impact criteria, send your line list and temperature requirements to our engineering team for a custom quotation.