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PIPE SPECIFICATIONS
Scope
A106 1/8" - 26"	Covers SEAMLESS nominal size and wall pipe for high-temperature service, suitable for bending, flanging, and similar forming operations.
STD, XS AND
XXS ANSI B36.10
	Heat treated cold drawn pipe may be furnished to this specification. Optional   supplementary requirements may be specified when pipe 8 inch and larger is intended for use where a superior grade is required.
Other sizes and dimensions may be furnished
Hydrostatic Testing
	Hydrostatic test pressures are calculated using the Barlow formula. Each pipe shall be tested to 60 percent of specified minimum yield strength, but not exceeding 2500 psi for3 inch nominal size or smaller, or 2800 psi for sizes over 3 inch.
Permissible Variations in Weights Per Foot
For schedule 120 and lighter
Pipe shall not vary more than 6.5 percent over and 3.5 percent under weights shown in ANSI B36.10.
For pipe heavier than schedule 120
Pipe shall not vary more than 10 percent over and 3.5 percent under weights shown in ANSI B36.10.
Sizes 4 inch and smaller are weighed in convenient lots. Pipe in sizes larger than 4 inch is weighed separately.

PIPE SPECIFICATIONS
Permissible Variations in OD
A106	OUTSIDE DIAMETER shall not exceed variations as listed below:
1/8" - 26"	Nominal Pipe Size	Over, Inch	Under, Inch
STD, XS and XXS ANSI B36.10 Other sizes and dimensions may be furnished	1/8 to 1-1/2, incl Over 1-1/2 to 4, incl Over 4 to 8, incl Over 8 to 18, incl Over 18 to 26, incl	1/64 (0.015) 1/32 (0.031) 1/16 (0.062) 3/32 (0.093) 1/8  (0.125)	1/64 (0.015) 1/32 (0.031) 1/32 (0.031) 1/32 (0.031) 1/32 (0.031)

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 max.	Mn	P max.	S max.	Si min.
	Grade A	0.25	0.27/0.93	0.035	0.035	0.10
	Grade B	0.30	0.29/1.06	0.035	0.035	0.10
	Grade C	0.35	0.29/1.06	0.035	0.035	0.10

Tensile Requirements
		Tensile Strength min, psi	Yield Point min, psi
Grade A		48,000	30,000
Grade B		60,000	35,000
Grade C		70,000	40,000
Table lists minimum elongation values.

PIPE SPECIFICATIONS
Mechanical Tests Specified
A106 1/8" - 26"	TENSILE TEST Required on all sizes.
STD, XS AND XXS ANSI B36.10
	BEND TEST Required on sizes 2 inch and smaller. 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 furnished
	FLATTENING TEST Required on sizes over 2 inch in nominal diameter.

PIPE SPECIFICATIONS
Scope
A53 1/8" - 26	Covers BLACK and hot-dipped GALVANIZED WELDEDand 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
A53	OUTSIDE 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	0.06
	Grade B	0.30	1.20	0.05	0.06
	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	45,000	25,000

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 furnished	FLATTENING TEST Required on sizes over 2 inch in nominal diameter in wall thickness, XS and lighter

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