FORGED STEEL FITTINGSSOCKET-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 ClassDesignation 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 maybe 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 B2.1American 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 MSSas required by customer.
FORGED STEEL FITTINGS
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