ASME B16.9 Equal Tee Carbon Steel — Factory Direct Supplier | Huaxia-Steel

ASME B16.9 equal tee is the standard butt-weld pipe fitting for splitting or combining flow in carbon steel piping. Used alongside elbows and reducers, equal tees join branch lines, headers, and instrument take-offs in refineries, chemical plants, and power stations. Huaxia-Steel supplies ASME B16.9 equal tees in carbon steel grades ASTM A234 WPB and WPC from Chinese mills.

Product Overview

An ASME B16.9 equal tee has a main run of one nominal size and a branch of the same nominal size, with a 90-degree centerline angle. The fitting is manufactured from seamless or welded pipe, or from plate formed and welded per ASME B16.9. Dimensions, tolerances, and pressure ratings are all controlled by the B16.9 standard.

Specifications

Item	Details
Standard	ASME B16.9 (factory-made wrought butt-welding fittings)
Type	Equal tee (straight tee)
Material grades	ASTM A234 WPB, WPC, WPRA
Size range	NPS 1/2 to NPS 48 (DN 15 to DN 1200)
Wall thickness	SCH 10S, 20S, STD, SCH 40, XS, SCH 80, SCH 120, SCH 160, XXS
End connections	Butt-weld (BW), beveled ends per ASME B16.25
Pressure rating	Matches the matching pipe schedule (Table 2.1 of B16.9)
Surface	As-formed, shot-blasted, or primed

Available Grades

From the same production lines we also supply:

ASTM A234 WPB – the standard grade for moderate and high-temperature service (matches A106 Gr.B and A53 Gr.B pipe)
ASTM A234 WPC – higher carbon grade for elevated-temperature service (matches A106 Gr.C)
ASTM A420 WPL6 – low-temperature carbon steel for -46 degrees C service
ASTM A860 WPHY 42 / 46 / 52 / 60 / 65 – high-strength low-alloy fittings
ASTM A234 WP9 / WP11 / WP22 – chrome-moly fittings for high-temperature power

Manufacturing Standards

ASME B16.9 (factory-made wrought butt-welding fittings)
ASME B16.25 (butt-welding ends)
ASTM A234 (carbon and alloy steel fittings)
ASTM A960 (general requirements for ferritic alloy fittings)
ASME B31.1 / B31.3 (power and process piping code)
EN 10253-2 (butt-welding fittings for pressure purposes, optional)

Applications

Refinery and petrochemical process piping headers
Boiler and power plant steam piping
Chemical plant branch connections and instrument take-offs
Gas transmission distribution
Marine and offshore piping
Food, beverage, and pharmaceutical process lines (where surface condition permits)

Quality Assurance

Every ASME B16.9 equal tee is dimensionally inspected per ASME B16.9 Table 2.1 (center-to-face dimensions) and Table 2.2 (tolerances). Material certificates to EN 10204 3.1 trace the chemistry and mechanical values of each heat. Hydrostatic testing is standard where required by the piping code; magnetic particle or ultrasonic testing of the weld is available on request.

Packing and Shipping

Small tees (NPS 1 to NPS 6) are typically crated in wooden boxes with paper linings and foam separators. Mid-size tees (NPS 8 to NPS 16) are bundled in plywood crates or palletized. Large tees (NPS 18 and above) are individually wrapped in VCI paper and strapped onto timber frames. All fittings receive end caps to prevent damage in transit. We ship FOB, CFR, CIF, and DDP from Tianjin, Shanghai, and Qingdao to project sites worldwide.

Why Buy ASME B16.9 Equal Tees from Huaxia-Steel?

Mill-direct pricing with consistent ASTM A234 WPB / WPC supply
ASME B16.9 dimensional compliance with report file
Full NPS 1/2 to NPS 48 size range
Complete dimensional inspection and EN 10204 3.1 certificate
Third-party inspection coordinated with SGS, BV, or TUV
Delivery on carbon steel pipe orders to reduce freight and project coordination

Need ASME B16.9 equal tees for a process project? Send us the run and branch diameters (or NPS), schedule, material grade, quantity, and destination. We will respond with a competitive offer within one working day.