WELD FITTINGS

FEATURES

Size Ranges from 1/8" to 2" in fractional series & 6 mm to 38 mm in metric series.

316 Stainless Steel is standard material. Other materials are available upon request.

Straight fittings are manufactured from bar stock & Forged fittings are manufactured from forgings.

Quality machining of all ports ensures consistent Welding.

For smooth flow path, elbows are designed with radius junction.

All Fittings are marked with Size, Material and Heat code for easy source tracing.

All threads are capped for protection and properly packaged.

All NPT pipe threads meet the requirements of ASME/ANSI B1.20.1.

Working pressure meets the requirements of ANSI/ASME B31.3 at ambient temperature.

WORKING PRESSURE

Catalogue pressure ratings shown are for temperatures from –20 to 100°F (–28 to 37°C), which are based on an allowable stress value of 20 000 psi (1378 bar) in accordance with ASME B31.3 for 316 stainless steel. To determine working pressures in accordance with ANSI/ASME B31.1, multiply catalogue working pressures shown by 0.94.

Use the allowable working pressure at ambient temperature to multiply the elevated temperature factors to get the working pressure at elevated temperature

WORKING TEMPERATURE

Material	Minimum Working Temperature	Maximum Working Temperature
SS 316	-325°F (-198°C)	1000°F (538°C)
SS 316L	-325°F (-198°C)	850°F (454°C)

Consult ASME Boiler and Pressure Vessel Code, ASME B31.1, ASME B31.3, or other applicable codes for information on weld setup, technique, and additional considerations for welded systems. The choice of fitting, pipe, and tubing material being welded is critical. Using the same materials will ensure the same coefficients of expansion and will reduce the possibility of poor welds, out-of-roundness, or dimensional changes that are detrimental to a good weld.

Material	Bar Stock	Forging	Tubing
Material	Bar Stock	Forging	Fractional	Metric
Grade SS 316	ASTM A276, ASTM A479, ASME SA276, ASME SA479	ASTM A182 ASME SA182	ASTM A213 (Seamless). ASTM A249 (Welded). ASTM A269 (Seamless & Welded).	EN ISO 1127
Grade SS 316L	ASTM A276, ASTM A479, ASME SA276, ASME SA479	ASTM A182 ASME SA182	ASTM A213 (Seamless). ASTM A249 (Welded). ASTM A269 (Seamless & Welded).	EN ISO 1127

Threads	Specification
NPT Threads	ASME B1.20.1
BSPT / ISO Tapered Threads	ISO 7-1, BS 21, JIS B0203, EN 10226-1, DIN 2999
BSPT / ISO Parallel Threads	ISO 228-1, BS 2779, JIS B0202

Male Connector – Tube Socket Weld (Fractional) X Male Pipe Threads (NPT)

Male Connector – Tube Socket Weld (Metric) X Male Pipe Threads (NPT)

Female Connector – Tube SW (Fractional) X Female Pipe Threads (NPT)

Male Elbow – Tube SW (Fractional) X Male Pipe Threads (NPT)

Female Elbow – Tube SW (Fractional) X Female Pipe Threads (NPT)

Male Run Tee – Tube Socket Weld (Fractional) X Male Pipe Threads (NPT)

Female Connector – Tube SW (Metric) X Female Pipe Threads (NPT)

Male Branch Tee – Tube SW (Fractional) X Male Pipe Threads (NPT)

Union Elbow – Tube SW Socket Weld (Fractional) SW on both size

Union Elbow – Tube Socket Weld (Metric)

Union – Tube Socket Weld (Fractional)

Union – Tube Socket Weld (Metric)

Female Tee – Tube Socket Weld (Fractional)

Female Tee – Tube Socket Weld (Metric)

Union Cross – Tube Socket Weld (Fractional)

Union Cross – Tube Socket Weld (Metric)

Reducing Union – Tube Socket Weld (Fractional)

Reducing Union – Tube Socket Weld (Metric)

Reducing Union – SW (Fractional) X SW (Metric)

Union 45° Elbow – Tube Socket Weld (Fractional)

Union 45° Elbow – Tube Socket Weld (Metric)

Male Connector – Pipe Socket Weld X Male Pipe Threads (NPT)

Female Connector – Pipe Socket Weld X Female Pipe Threads (NPT)

Union – Pipe Socket Weld Both Size with Socket Weld Connection

Male Connector – Tube Butt Weld (Fractional) X Male Pipe Threads (NPT)

Male Connector – Tube Butt Weld (Metric) X Male Pipe Threads (NPT)

Female Connector – Tube BW (Fractional) X Female Pipe Threads (NPT)

Female Connector – Tube BW (Metric) X NPTF

Reducing Union – Tube Butt Weld (Fractional)

Reducing Union – Tube Butt Weld (Metric)

Union Elbow – Tube Butt Weld (Fractional)

Union Elbow – Tube Butt Weld (Metric)

Union Tee – Tube Butt Weld (Fractional)

Union Tee – Tube Butt Weld (Metric)

Union Cross – Tube Butt Weld (Fractional)

Union Cross – Tube Butt Weld (Metric)

Male Connector – Pipe Butt Weld X Male Pipe Threads (NPT)

Female Connector – Pipe Butt Weld X Male Pipe Threads (NPT)

Weld Adapter – Tube Socket Weld (Fractional) X Pipe Butt Weld

Adaptor – Tube Socket Weld SW (Fractional) X Pipe Butt Weld BW (Fractional)

Pipe to Tube Butt Weld – Female ISO Parallel / BSPP Pipe Threads X Tube Butt Weld (Metric)

PIPE TO TUBE BUTT WELD – FEMALE METRIC PIPE THREAD X TUBE BUTT WELD (METRIC)

Male Pipe to Tube Butt Weld – Male NPT Pipe X Tube Butt Weld (Metric)