PIPE SPECIFICATIONS


Scope

A53
1/8″ – 26
Covers BLACK and hot-dipped GALVANIZED WELDED and SEAMLESS nominal size and wall pipe suitable for welding and for coiling, bending, flanging, and other forming operations.
STD, XS AND XXS
ANSI B36.10
Continuous weld pipe is not intended for flanging (using pipe wall to form flange).
 
Other sizes and dimensions
maybe furnished
Seamless and electric-resistance weld pipe may be specified in grades A or B.
 
 Order should specify when pipe is required for close coiling.
 
Hydrostatic Testing

 Prescribes hydrostatic test pressures for continuous weld pipe and for seamless and electric resistance weld pipe.
Provision is made for test pressures not to exceed 2500 psi for pipe 3 inch and under or 2800 psi for pipe over 3 inch.
 
 Each length of pipe must be tested at the producing mill.
Welded pipe 2 inch and larger is jarred near one end whileunder test pressure.
 
 Refer to ASTM A53 Table X 2.2
 
Permissible Variations in Weights Per Foot

For XS and lighter wall thicknesses
 
Pipe shall not vary more than plus or minus 5 percent from weights shown in tables and included in ANSI B36.10.
 
For walls heavier than XS
 
Pipe shall not vary more than plus or minus 10 percent from weights shown in tables and included in ANSI B36.10.
 
Sizes 4 inch and smaller weighted in customary mill lifts. On larger sizes, weight tolerance is applicable to individual lengths.

PIPE SPECIFICATIONS


Permissible Variations in OD
A53OUTSIDE DIAMETER at any point shall not vary more than:
1/8″ – 26″
STD, XS and XXS
ANSI B36.10

Nominal Pipe Size

Over

Under

1-1/2″ and smaller
1/64″
1/64″
Other sizes and dimensions may
be furnished
2 and larger
1%
1%
 
 
Permissible Variations in Wall Thickness

Minimum wall thickness at any point shall not be more than 12.5 percent under nominal wall thickness specified.
Specification contains a table of minimum wall thicknesses on inspection calculated as 0.875 x nominal wall.
 
Chemical Requirements

 Composition, max. percent
  
C
Mn
P
S
 
 Types S and E    
   Grade A
0.25
0.95
0.05
0.045
   Grade B
0.30
1.20
0.05
0.045
 Type F
0.06
0.045
 
Tensile Requirements

  
Tensile Strength
min, psi
Yield Point
min, psi
 
 Types S and E
   Grade A
48,000
30,000
   Grade B
60,000
35,000
 Type F
48,000
30,000
Table lists minimum elongation values calculated by the equation:
e=625,000 A0.2 /U0.9   

PIPE SPECIFICATIONS


Mechanical Tests Specified

A53

1/8″ – 26

TENSILE TEST
Required on all sizes. Tests on welded pipe 8 inch and larger shall be from transverse specimen.
STD, XS AND XXS
ANSI B36.10
BEND TEST
Required on sizes 2 inch and smaller, except XXS over 1-1/4 inch. Pipe shall stand cold bending through 90 degrees around a mandrel with a diameter twelve times the nominal diameter of the pipe without cracking. If for close coiling bend shall be 180 degrees around diameter eight times the nominal diameter of pipe.
Other sizes and dimensions may be furnishedFLATTENING TEST
Required on sizes over 2 inch in nominal diameter in wall thickness, XS and lighter