ASTM A795 / A795M

Abstract

This specification covers black and hot-dipped zinc-coated (galvanized) welded and seamless steel pipe for fire protection use. The pipe may be bent, but it is not intended for bending made at ambient temperature wherein the inside diameter of the bend is less than twelve times the outside diameter of the pipe being bent. The steel shall conform to the required chemical composition. Each length of pipe shall be subjected to a hydrostatic test without leakage through the pipe wall. As an alternative to the hydrostatic test, and when accepted by the purchaser, each pipe shall be tested with a non-destructive electrical method. Finally, flattening test shall be performed on the pipe in accordance with, electric-resistance-welded pipe, and furnace-welded pipe.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers black and hot-dipped galvanized welded and seamless steel pipe in NPS 1/2 to NPS 10, inclusive [DN 15 to DN 250, inclusive] (Note 1), with wall thicknesses as given in Table 1 and Table 2. Pipe having other wall thicknesses may be furnished provided such pipe complies with all other requirements of this specification and the outside diameter is as given in Table 2. Pipe ordered under this specification is intended for use in fire protection systems. The pipe may be bent, but it is not intended for bending made at ambient temperature wherein the inside diameter of the bend is less than twelve times the outside diameter of the pipe being bent (Note 2).

Note 1???The dimensionless designators NPS (nominal pipe size) and DN (nominal diameter) have been substituted in this standard for such traditional terms as ???nominal diameter,??? ???size,??? and ???nominal size.???

TABLE 1 Dimensions, Weights, and Test Pressure For Light-Weight Fire Protection Pipe???Schedule 10^A

NPS Designator	DN Designator	Outside Diameter		Nominal Wall Thickness		Weight Plain End		Test Pressure
		Outside Diameter		Nominal Wall Thickness		Weight Plain End		Furnace-Welded		Seamless and Electric-Resistance-Welded
		in.	mm	in.	mm	lb/ft	kg/m	psi	kPa	psi	kPa
³/₄	20	1.050	[26.7]	0.083	[2.11]	0.86	[1.28]	500	[3400]	700	[4800]
1	25	1.315	[33.4]	0.109	[2.77]	1.41	[2.09]	500	[3400]	700	[4800]
1¹/₄	32	1.660	[42.2]	0.109	[2.77]	1.81	[2.69]	500	[3400]	1000	[6900]
1¹/₂	40	1.900	[48.3]	0.109	[2.77]	2.09	[3.11]	500	[3400]	1000	[6900]
2	50	2.375	[60.3]	0.109	[2.77]	2.64	[3.93]	500	[3400]	1000	[6900]
2¹/₂	65	2.875	[73.0]	0.120	[3.05]	3.53	[5.26]	500	[3400]	1000	[6900]
3	80	3.500	[88.9]	0.120	[3.05]	4.34	[6.46]	500	[3400]	1000	[6900]
3¹/₂	90	4.000	[101.6]	0.120	[3.05]	4.98	[7.41]	500	[3400]	1200	[8300]
4	100	4.500	[114.3]	0.120	[3.05]	5.62	[8.37]	500	[3400]	1200	[8300]
5	125	5.563	[141.3]	0.134	[3.40]	7.78	[11.58]	^B	^B	1200	[8300]
6	150	6.625	[168.3]	0.134	[3.40]	9.30	[13.85]	^B	^B	1000	[6900]
8	200	8.625	[219.1]	0.188^C	[4.78]	16.96	[25.26]	^B	^B	800	[5500]
10	250	10.750	[273.1]	0.188^C	[4.78]	21.23	[31.62]	^B	^B	700	[4800]

^A Schedule 10 corresponds to Schedule 10S as listed in ANSI B36.19 for NPS ³/₄ through 6 [DN 20 through 150] only.

^B Furnace-welded pipe is not made in sizes larger than NPS 4 [DN 100].

^C Not Schedule 10.

TABLE 2 Dimensions, Weights, Test Pressures For Standard-Weight Fire Protection Pipe???Schedule 30 and Schedule 40

NPS Designator	DN Designator	Specified Outside Diameter		Nominal Wall Thickness^A		Weight Plain End		Weight Threaded and Coupled^B		Test Pressure
		Specified Outside Diameter		Nominal Wall Thickness^A		Weight Plain End		Weight Threaded and Coupled^B		Furnace-Welded		Seamless and Electric-Resistance-Welded
		in.	mm	in.	mm	lb/ft	kg/m	lb/ft	kg/m	psi	kPa	psi	kPa
¹/₂	15	0.840	[21.3]	0.109	[2.77]	0.85	[1.27]	0.85	[1.27]	700	[4800]	700	[4800]
³/₄	20	1.050	[26.7]	0.113	[2.87]	1.13	[1.69]	1.13	[1.68]	700	[4800]	700	[4800]
1	25	1.315	[33.4]	0.133	[3.38]	1.68	[2.50]	1.68	[2.50]	700	[4800]	700	[4800]
1¹/₄	32	1.660	[42.2]	0.140	[3.56]	2.27	[3.39]	2.28	[3.40]	1000	[6900]	1000	[6900]
1¹/₂	40	1.900	[48.3]	0.145	[3.68]	2.72	[4.05]	2.73	[4.07]	1000	[6900]	1000	[6900]
2	50	2.375	[60.3]	0.154	[3.91]	3.66	[5.45]	3.69	[5.50]	1000	[6900]	1000	[6900]
2¹/₂	65	2.875	[73.0]	0.203	[5.16]	5.80	[8.64]	5.83	[8.68]	1000	[6900]	1000	[6900]
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard. ASTM Standards A90/A90M Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products A865 Specification for Threaded Couplings, Steel, Black or Zinc-Coated (Galvanized) Welded or Seamless, for Use in Steel Pipe Joints B6 Specification for Zinc E213 Practice for Ultrasonic Testing of Metal Pipe and Tubing E309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation E570 Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products ASME Standards B36.19 Stainless Steel Pipe Federal Standard Fed.Std.No.123 Marking for Shipments (Civil Agencies) Military Standards MIL-STD-163 Steel Mill Products, Preparation for Shipment and Storage Keywords black steel pipe; seamless steel pipe; steel pipe; welded steel pipe; zinc coated steel pipe; ICS Code ICS Number Code 23.040.10 (Iron and steel pipes) DOI: 10.1520/A0795_A0795M-08R12 ASTM International is a member of CrossRef. ASTM A795 / A795M (Steel Standards) Citing ASTM Standards [Back to Top]

ASTM A795 / A795M - 08(2012)

ASTM A795 / A795M - 08(2012) Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use

ASTM A795 / A795M (Steel Standards)