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FORGED STEEL FITTINGS

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FORGED STEEL FITTINGS

SOCKET-WELDING / THREADED / OUTLET ( ASME B16.11 / MSS-SP / ASME B31.1 )

l CONTENTS l

1. SOCIET-WELDING TYPE

  • 90˚ ELBOW / 45˚ ELBOW / TEE / CROSS
  • COUPLING / HALF COUPLING / CAP / LATERAL
  • REDUCER
  • BOSS
  • REDUCER INSERT
  • UNION

2. THREADED TYPE

  • 90˚ ELBOW / 45˚ ELBOW / TEE / CROSS
  • COUPLING / HALF COUPLING / CAP / LATERAL
  • REDUCER
  • BOSS
  • THREADED PLUG / BUSHING
  • NIPPLE
  • UNION
  • SWAGED NIPPLE

3. OUTLET

  • WELDOLET
  • SOCKOLET
  • THREADOLET
  • NIPPOLET
  • FLANGEOLET
  • SWEEPOLET

l FORGED FITTINGS, SOCKET-WELDING AND THREADED l

1. PRESSURE RATINGS

The fittings under this catalog shall be designated as Class 2000, 3000 and 6000 for threaded end fittings and Class 3000, 6000 and 9000 for socket-weld end fittings. This designation identifies the fittings with their ratings as follows.

Table 1 : Correlation of fitting class with schedule number of wall designation of pipe for calculation of ratings.

Pressure Class
Designation of Fitting
Type of Fitting
Pipe used for Rating Basic
Schedule No.
Wall Designation
2000
Threaded
80
XS
3000
Threaded
160

 

6000
Threaded

 

XXS
3000
Socket-Welding
80
XS
6000
Socket-Welding
160

 

9000
Socket-Welding

 

XXS

This table is not intended to restrict the use of pipe of thinner or thicker wall with fittings. Pipe actually used may
be thinner or thicker in nominal wall than that shown in Table 1. When thinner pipe is used its strength may govern the rating When thicker pipe is used (e g for mechanical strenth) the strength of the fitting governs the rating.

2. SIZE IDENTIFICATION

The size of a fitting is identified by the nominal pipe size. For reducing fittings, the size of the largest run opening is to be given first followed by the size of the opening opposite of the same run. The branch size of a tee is given last where the case is Cross. The largest side-outlet is thirdly given, then the opening opposite.

3. THREADS

Unless otherwise specified in inquiry, all threaded fittings are supplied with NPT threads (ASME B2.1
American Standard Taper Pipe Thread) for reference, other available threads are :

  • ISO/R7 Pipe threads for gas list tubes and screwed fittings where pressure-tight joints are made on the threads (BS21 & JIS B0203 PT Thread).
  • API 5B, Line Pipe Threads.
  • KS B0222 Taper Pipe Threads.

4. BORE DIAMETER OF FITTINGS

Bore diameter of fittings (M) is manufactured in accordance with applicable KS, JIS, ASME or MSS
as required by customer.




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