Butt Weld Fitting

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.

MATERIAL

Material

Bar Stock Forging Tubing
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

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

INSTALLATION INSTRUCTIONS

To ensure leak proof tight seal, recommends use of pipe thread sealant on all NPT threads. The most effective sealing method is the use of Teflon tape, Tape should be used on male NPT tapered threads. Clean both male and female tapered threads, wrap tape in direction of male tapered, cut off excess tape.

 

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.

Butt Weld Fitting
Male Connector - Tube Socket Weld (Fractional) X Male Pipe Threads (NPT)
Socket Weld Fitting
Male Connector - Tube Socket Weld (Metric) X Male Pipe Threads (NPT)
Butt Weld Fittting
Female Connector - Tube Socket Weld (Fractional) X Female Pipe Threads (NPT)
Butt Weld Fitting
Male Elbow - Tube Socket Weld (Fractional) X Male Pipe Threads (NPT)
Weld Fitting
Female Elbow - Tube Socket Weld (Fractional) X Female Pipe Threads (NPT)
Butt Weld Fitting
Male Run Tee - Tube Socket Weld (Fractional) X Male Pipe Threads (NPT)
Socket Weld Fitting
Female Connector - Tube Socket Weld (Metric) X Female Pipe Threads (NPT)
Butt Weld Fitting
Male Branch Tee - Tube Socket Weld (Fractional) X Male Pipe Threads (NPT)
Weld Fittings
Union Elbow - Tube Socket Weld (Fractional)
Socketweld Fittings
Union Elbow - Tube Socket Weld (Metric)
Buttweld Fittings
Union - Tube Socket Weld (Fractional)
Weld Fittings
Union - Tube Socket Weld (Metric)
Socketweld Fittings
Female Tee - Tube Socket Weld (Fractional)
Weld Fittings
Female Tee - Tube Socket Weld (Metric)
Buttweld Fittings
Union Cross - Tube Socket Weld (Fractional)
Socketweld Fittings
Union Cross - Tube Socket Weld (Metric)
Weld Fittings
Reducing Union - Tube Socket Weld (Fractional)
Buttweld Fittings
Reducing Union - Tube Socket Weld (Metric)
Socketweld Fittings
Reducing Union - Tube Socket Weld (Fractional) X Tube Socket Weld (Metric)
Buttweld Fittings
Union 45° Elbow - Tube Socket Weld (Fractional)
Socketweld Fittings
Union 45° Elbow - Tube Socket Weld (Metric)
Weld Fitting
Male Connector - Pipe Socket Weld X Male Pipe Threads (NPT)
Weld Fittings
Female Connector - Pipe Socket Weld X Female Pipe Threads (NPT)
Buttweld Fittings
Union - Pipe Socket Weld
Socketweld Fittings
Male Connector - Tube Butt Weld (Fractional) X Male Pipe Threads (NPT)
Weld Fittings
Male Connector - Tube Butt Weld (Metric) X Male Pipe Threads (NPT)
Buttweld Fittings
Female Connector - Tube Butt Weld (Fractional) X Female Pipe Threads (NPT)
Socketweld Fittings
Female Connector - Tube Butt Weld (Metric) X Female Pipe Threads (NPT)
Weld Fittings
Reducing Union - Tube Butt Weld (Fractional)
Buttweld Fittings
Reducing Union - Tube Butt Weld (Metric)
Socketweld Fittings
Union Elbow - Tube Butt Weld (Fractional)
Weld Fittings
Union Elbow - Tube Butt Weld (Metric)
Buttweld Fittings
Union Tee - Tube Butt Weld (Fractional)
Socketweld Fittings
Union Tee - Tube Butt Weld (Metric)
Weld Fittings
Union Cross - Tube Butt Weld (Fractional)
Buttweld Fittings
Union Cross - Tube Butt Weld (Metric)
Socketweld Fittings
Male Connector - Pipe Butt Weld X Male Pipe Threads (NPT)
Weld Fittings
Female Connector - Pipe Butt Weld X Male Pipe Threads (NPT)
Buttweld Fittings
Weld Adapter - Tube Socket Weld (Fractional) X Pipe Butt Weld
Socketweld Fittings
Adaptor - Tube Socket Weld (Fractional) X Pipe Butt Weld
Weld Fittings
Pipe to Tube Butt Weld - Female ISO Parallel / BSPP Pipe Threads X Tube Butt Weld (Metric)
Buttweld Fittings
PIPE TO TUBE BUTT WELD - FEMALE METRIC PIPE THREAD X TUBE BUTT WELD (METRIC)
Socketweld Fittings
Male Pipe to Tube Butt Weld - Male NPT Pipe X Tube Butt Weld (Metric)