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ASTM A795/A795M-13 Fire Fighting Pipes

ASTM A795/A795M-13

Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use

Name: China ASTM A795/A795M-13 Fire Fighting Pipes Suppliers, Manufacturers, Factory - Good Price - Tianjin Lefin
Brand: Lefin
SKU: 241025729

ASTM A795 Fire Fighting Pipes Groove Ends

ASTM A795 (Bare Pipe or Red/Black Painted or GALVANISED or FEB coated )

consistency, reliability, and superior performance.

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]
1 1/4	32	1.660	[42.2]	0.109	[2.77]	1.81	[2.69]	500	[3400]	1000	[6900]
1 1/2	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]
2 1/2	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]
3 1/2	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.

Dimensions, Weights, Test Pressures For Standard-Weight Fire Protection Pipe-Schedule 30 and Schedule 40
NPS Designator	DN Designator	Outside Diameter		Nominal Wall Thickness A		Weight Plain End		Weight Threaded and Coulpled B		Test Pressure
		Outside Diameter		Nominal Wall Thickness A		Weight Plain End		Weight Threaded and Coulpled 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]
1 1/4	32	1.660	[42.2]	0.140	[3.56]	2.27	[3.39]	2.28	[3.40]	1000	[6900]	1000	[6900]
1 1/2	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]
2 1/2	65	2.875	[73.0]	0.203	[5.16]	5.80	[8.64]	5.83	[8.68]	1000	[6900]	1000	[6900]
3	80	3.500	[88.9]	0.216	[5.49]	7.58	[11.29]	7.62	[11.35]	1000	[6900]	1000	[6900]
3 1/2	90	4.000	[101.6]	0.226	[5.74]	9.12	[13.58]	9.21	[13.71]	1200	[8300]	1200	[8300]
4	100	4.500	[114.3]	0.237	[6.02]	10.80	[16.09]	10.91	[16.25]	1200	[8300]	1200	[8300]
5	125	5.563	[141.3]	0.258	[6.55]	14.63	[21.79]	14.82	[22.07]	C	C	1200	[8300]
6	150	6.625	[168.3]	0.280	[7.11]	18.99	[28.29]	19.20	[28.60]	C	C	1200	[8300]
8	200	8.625	[219.1]	0.277^A	[7.04]	24.72	[36.82]	25.57	[38.09]	C	C	1200	[8300]
10	250	10.750	[273.1]	0.307^A	[7.80]	34.27	[51.05]	35.78	[53.29]	C	C	1000	[6900]
A NPS 1/2 through 6 [DN 15 through 150]-Schedule 40; NPS 8 and 10 [DN 200 and 250]-Schedule 30. B Based on 20-ft [6.1-m] lengths. c Furnace-welded pipe is not made in sizes larger than NPS 4 [DN 100].

1.TOLERANCE

1.1 On Thickness:The minimum wall thickness at any point shall be not more than 12.5% under the specified wall thickness.

1.2 On Diameter:

For NPS 11/2" and under any point shall not vary more than +0.4 mm -0.8 mm.

For NPS 2" and above shall not vary more than +/- 1% from the standard specified

1.3. On Weight

The weight of the pipe shall not more than ±5% of the specified weight.

2.ENDS

Each end of pipe shall be furnish plain end unless otherwise specified.

3.INTERNAL DEBEADING

2" and above -Internal beads to be removed completely.

ASTM A795 Galvanized Fire Fighting Pipes

4.CHEMICAL COMPOSITION

GRA%MAX-C-0.25%,Mn-0.95%6,S-0.035%,P-0.035%

5.MECHANICAL (MIN.)

GR.A Yield Strength-205 N/mm², Tensile Strength-330 N/mm², Elongation-25-30%

6.FLATTENING TEST

Weld located 0 and 90 degree from line of direction of force.

Stage-1: For weld ductility until 2/3 of outside diameter of specimen tube.

Stage-2: For ductility of steel until 1/3 of outside diameter of specimen tube.

Stage-3: Full flattening for testing of laminated and unsound material.

7.LEAK TIGHTNESS TEST

7.1On line NDT(Eddy Current)

7.2Hydro testing at pressure as per above table and holding time Min. 5 Second.

8. BLACK VARNISH

Tubes are uniformly varnished externally over their full length.

9.COATING

9.1ZINC COATING

The Average 460 gm/m² but one side should not be less than 400 gm/m²or Specified by customer

Free from bare Spot,Black spot,rough,over coating, Peel off or any other surface defect.

ASTM A795 specifies strict material specifications to ensure that the pipe meets the necessary strength and corrosion resistance criteria.

Hot dip galvanising further enhances the durability of the pipe, allowing it to withstand the challenging conditions often encountered in industrial and fire fighting environments.

9.2 FBE COATING

FBE coating pipe is Fusion Bonded Epoxy coating steel pipe. It could be applied for external or internal coating, with heat resin for pipe.

With coated a form of dry powder at thickness 400-600 microns on to the heated surface of pipe. Once the FBE coated on the pipe surface, the FBE film provides an extremely hard surface with great adhesion to the pipe surface. The FBE layer in a even form and have good resistance to the chemical reaction.

ASTM A795 Fire Fighting Pipes External Epoxy coated