SHORT DESCRIPTIONS:

Keywords（pipe type）:Alloy Pipe, Alloy Tube, Alloy Steel Pipe, Alloy Steel Tube, High Pressure Steel Pipe, Boiler Steel Pipe, ASME SA335, P11, ASTM A335

Size:Size 1/4” to 24” Outside Diameter 13.7 mm to 609.6 mm; Wall thickness:SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100 SCH120, SCH160, XS, XXS,Pipe Length:Single Random Length and double Random Length.SRL:3M-5.8M DRL:10-11.8M or As clients requested length

Standard & Grade:ASME SA 335 American society of mechanical engineers; ASTM A335M American society for Testing and Materials

Ends:Plain End, Beveled End, Thread End

Delivery:Within 30 days and Depends on your order quantity

Payment:TT, LC,OA,D/P

Packing:Bundled with Hemp Rope/In Bulk

Usage:For manufacture wall panel, economizer, reheater, superheater and steam pipeline of boilers

DESCRIPTIONS:

DESCRIPTIONS:
Product Name																																																		Alloy Steel Pipe
Material																																																		Alloy Steel
Pipe Length																																																		Single Random Length and double Random Length.SRL:3M-5.8M DRL:10-11.8M or As clients requested length
Size																																																		Size 1/4” to 24” Outside Diameter 13.7 mm to 609.6 mm
Wall thickness																																																		SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100 SCH120, SCH160, XS, XXS
Standard																																																		ASTM A 335 Grade P1, P2, P5, P9, P9A, P11, P22.ASTM A213 T1B, T1, T2, T5, T9, T9A, T11, T12, T22.A199 T5, T9, T11, T22.BS 3604 Grade 621, 622, 625, 629-470, 629-590, 660, 762.DIN 17175 15 Mo 3, 13 Cr Mo 44, 10 Cr Mo 910, 14 Mo V 63, X 20 Cr Mo V 121. BS 3059 Grade 243, 620-460, 622-490, 629-470, 629-590, 762. JISG3458/G3462/3467 and DIN17175-79.
Applications																																																		1.Fluid pipe 2. Power Plant 3. Structure pipe 4. High and low pressure Boiler tube 5. Seamless steel tubes for petroleum cracking 6. Conduit pipe 7. Scaffolding pipe pharmaceutical and ship building etc
Certificate																																																		ISO/PED/TUV/SGS/LR/BV
Main Market																																																		Asia, Middle East, Europe, America, Africa, Australia, etc

ASTM A335 PIPE FEATURES

The A335 pipes has a high level of Chromium and Molybdenum presence in it. While Molybdenum increases the overall strength, resistance, elasticity, hardenability and overall quality, moly ensures that the material is more resistant to softening, restrains the growth of grains and lessens the chances of embrittlement. It is the single additive that is responsible for the increase in high temperature resistance and it also improves the corrosion resistance to steel.

CHROMIUM - KEY CHEMICAL ELEMENT FOR A335 PIPE

Chromium is a key component that is used in the manufacture of stainless steel. If the chromium levels are above 12%, it can be classified as stainless steel. The oxidation resistance potential of chrome is irreplaceable even in elevated temperatures. The hardness, tensile and yield strength is better at standard temperatures. Due to the composition of the material, it is ideal to be used in power plants, refineries, petro-chemical plants and other oil field services when there is transportation under high temperatures and pressures involved.

A335 Pipe Chemical Composition
Grade	C	Mn	P	s	Si	Cr
			Max	Max
P5	0.15 max	0.30-0.60	0.025	0.025	0.50 max	4.00-6.00
P9	0.15 max	0.30-0.60	0.025	0.025	0.25-1.00 max	4.00-6.00
P11	0.05-0.15	0.30-0.60	0.025	0.025	0.50-1.00	1.00-1.50
P12	0.05-0.15	0.30-0.61	0.025	0.025	0.50 max	80-1.25
P21	0.05-0.15	0.30-0.60	0.025	0.025	0.50 max	2.65-3.35
P22	0.05-0.15	0.30-0.60	0.025	0.025	0.50 max	1.90-2.60
P91	0.08-0.12	0.30-0.60	0.020	0.010	0.20-0.50	8.00-9.50
P92	0.07-0.13	0.30-0.60	0.020	0.010	0.50 max	8.50-9.50

Mechanical Properties
Grade	Yield Strength	Tensile Strength	Elongation %	Hardness Brinell
	Mpa[ksi]	Mpa [ksi]
P5	205 [30]	415 [60]	30	207 max
P9	205 [30]	415 [60]	30	-
P11	205 [30]	415 [60]	20	-
P12	205 [30]	415 [60]	30	174 max
P22	205 [30]	415 [60]	30	-
P91 (1,2)	415 [60]	585 [85]	20	a
a: P91 type 1 and 2 hardness range from 190 to 250 [HBW] or 196 to 265 [HV] or 91 HRBW to 25 HRC.

Dimension Tolerances

Tolerance in wall thickness:
NPS [DN] Designator	Tolerance % on Wall Thickness
[t = Wall Thickness; D = Outer Diameter]	Over (+)	Under (-)
1/8 to 2 1/2 [6 to 65] for all t/D ratios	20.0	12.5
Above 2 1/2'' [65], t/D ≤ 5%	22.5	12.5
Above 2 1/2 [65], t/D > 5%	15.0	12.5

Permissible variations for Outer Diameter:

NPS [DN] Designator	Over (+)	Over (+)	Under(-)	Under(-)
	inch	mm	inch	mm
1/8 to 1 1/2 [6 to 40]	1/16 (0.015)	0.40	1/16 (0.015)	0.40
Over 1 1/2 to 4 [40 to 100]	1/32 (0.031)	0.79	1/32 (0.031)	0.79
Over 4 to 8 [100 to 200]	1/16 (0.062)	1.59	1/32 (0.031)	0.79