ASME B16.39:2009 pdf download.Malleable lron Threaded Pipe Unions.
9 HYDROSTATIC STRENGTH
Assembled Unions shall be capable of withstanding, without rupture or leakage through the shell or at the union point, .n internal hydrostatic pre%sLireof five times the cold 66CC (l50F) pressure rating for I mm.
10 TENSILE STRENGTH
(a) Assembled unions shall be capable of withstanding, without rupture, the tensile loads shown in Table 2 and Table 1.2.
(b) Tests shall be conducted by attaching threaded steel bars or pipe to each end of the union using the pipe threads. Bars or pipe are to be secured in a tensile testing machine. load shall be increased at a uniform rate until the tensile load is attained,
11 AIR PRESSURE TEST
Assembled unions selected in accordance with section 12 shall be tested with air at a minimum pressure of 2.8 bar (40 psi).
12 SAMPUNG FOR AIR PRESSURE TEST
A random sample of unions representative of the pro.duction kit shall be submitted for testing in accordance with section 11. The average outgoing quality level (AOQL). as defined in ANSI/ASQ Zl.4. of the established acceptable sampling plans used shall not exceed 2%. A lot, for purposes of this Standard, is defined as the number of unions of the sanw size, design, ind pressure rating submitted for testing at any one time.
13 COATINGS
13.1 Malleable Iron Unions
When malleable iron unions arc zinc coated, they shall be hot dipped in accordance with ASTM A 153 or have an electrodeposited zinc coating conforming to ASThI B 633, Type 1, Service Condition 4. Hot dipped coatings shall be a minimum thickness of 86 m (0.0034 in.) and applied prior to threading. Electrndeposited zinc shall be a minimum thickness of 25 m (0.001 in.) and may be applied either before or after threading.
Assembled Unions shall be capable of withstanding, without rupture or leakage through the shell or at the union point, .n internal hydrostatic pre%sLireof five times the cold 66CC (l50F) pressure rating for I mm.
10 TENSILE STRENGTH
(a) Assembled unions shall be capable of withstanding, without rupture, the tensile loads shown in Table 2 and Table 1.2.
(b) Tests shall be conducted by attaching threaded steel bars or pipe to each end of the union using the pipe threads. Bars or pipe are to be secured in a tensile testing machine. load shall be increased at a uniform rate until the tensile load is attained,
11 AIR PRESSURE TEST
Assembled unions selected in accordance with section 12 shall be tested with air at a minimum pressure of 2.8 bar (40 psi).
12 SAMPUNG FOR AIR PRESSURE TEST
A random sample of unions representative of the pro.duction kit shall be submitted for testing in accordance with section 11. The average outgoing quality level (AOQL). as defined in ANSI/ASQ Zl.4. of the established acceptable sampling plans used shall not exceed 2%. A lot, for purposes of this Standard, is defined as the number of unions of the sanw size, design, ind pressure rating submitted for testing at any one time.
13 COATINGS
13.1 Malleable Iron Unions
When malleable iron unions arc zinc coated, they shall be hot dipped in accordance with ASTM A 153 or have an electrodeposited zinc coating conforming to ASThI B 633, Type 1, Service Condition 4. Hot dipped coatings shall be a minimum thickness of 86 m (0.0034 in.) and applied prior to threading. Electrndeposited zinc shall be a minimum thickness of 25 m (0.001 in.) and may be applied either before or after threading.
