Classfication
	
| 
				Classfication | 
			
				Standard | 
			
				Main Products | 
		
| 
				Steel Pipe for Fluid Service | 
			
				GB/T 14291 | 
			
				Welded pipe for mine fluid sevice | 
		
| 
				GB/T 3091 | 
			
				Welded pipe for low pressure fluid service | 
		|
| 
				SY/T 5037 | 
			
				Spirally submerged arc welded steel pipe for pipelines for low pressure fluid service | 
		|
| 
				ASTM A53 | 
			
				Black and hot-hipped galvanized welded and seamless steel pipe | 
		|
| 
				BS EN10217-2 | 
			
				Welded steel tybes for pressure purposes - delivery technical conditions - part2: Electric welded non- alloy and alloy steel tubes with specified elevated temperature properties | 
		|
| 
				BS EN10217-5 | 
			
				Welded steel tybes for pressure purposes - delivery technical conditions - part5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties | 
		|
| 
				Steel Pipe for Ordinary Structure | 
			
				GB/T 13793 | 
			
				Longitudinally electric resistance welded steel pipe | 
		
| 
				SY/T 5040 | 
			
				Spirally submerged arc welded steel pipe piles | 
		|
| 
				ASTM A252 | 
			
				Welded and seamless steel pipe piles | 
		|
| 
				BS EN10219-1 | 
			
				Cold formed welded structural hollow sections of non-alloy and fine grain steels - part1: Technical delivert conditions | 
		|
| 
				BS EN10219-2 | 
			
				Cold formed welded structural hollow sections of non-alloy and fine grain steels - part2: tolerances dimmsions and sectional properties | 
		|
| 
				Line Pipe | 
			
				GB/T 9711.1 | 
			
				Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class A steel pipe) | 
		
| 
				GB/T 9711.2 | 
			
				Steel pipe for pipeline transportation system of petroleum and natural gas industries(Class B steel pipe) | 
		|
| 
				API 5L PSL1/2 | 
			
				Line pipe | 
		|
| 
				Casing | 
			
				API 5CT/ ISO 11960 PSL1 | 
			
				Steel pipe for use as casing or tubing for wells of petroleum and natural gas industries | 
		
	
	
Chemical Analysis and Mechanical Properties
	
| 
				Standard | 
			
				Grade | 
			
				Chemical Composition(max)% | 
			
				Mechanical Properties(min) | 
		|||||
| 
				C | 
			
				Si | 
			
				Mn | 
			
				P | 
			
				S | 
			
				Tensile Strength(Mpa) | 
			
				Yield Strength(Mpa) | 
		||
| 
				API 5CT | 
			
				h40 | 
			- | - | - | - | 
				0.030 | 
			
				417 | 
			
				417 | 
		
| 
				J55 | 
			- | - | - | - | 
				0.030 | 
			
				517 | 
			
				517 | 
		|
| 
				K55 | 
			- | - | - | - | 
				0.030 | 
			
				655 | 
			
				655 | 
		|
| 
				API 5L PSL1 | 
			
				A | 
			
				0.22 | 
			- | 
				0.90 | 
			
				0.030 | 
			
				0.030 | 
			
				335 | 
			
				335 | 
		
| 
				B | 
			
				0.26 | 
			- | 
				1.20 | 
			
				0.030 | 
			
				0.030 | 
			
				415 | 
			
				415 | 
		|
| 
				X42 | 
			
				0.26 | 
			- | 
				1.30 | 
			
				0.030 | 
			
				0.030 | 
			
				415 | 
			
				415 | 
		|
| 
				X46 | 
			
				0.26 | 
			- | 
				1.40 | 
			
				0.030 | 
			
				0.030 | 
			
				435 | 
			
				435 | 
		|
| 
				X52 | 
			
				0.26 | 
			- | 
				1.40 | 
			
				0.030 | 
			
				0.030 | 
			
				460 | 
			
				460 | 
		|
| 
				X56 | 
			
				0.26 | 
			- | 
				1.40 | 
			
				0.030 | 
			
				0.030 | 
			
				490 | 
			
				490 | 
		|
| 
				X60 | 
			
				0.26 | 
			- | 
				1.40 | 
			
				0.030 | 
			
				0.030 | 
			
				520 | 
			
				520 | 
		|
| 
				X65 | 
			
				0.26 | 
			- | 
				1.45 | 
			
				0.030 | 
			
				0.030 | 
			
				535 | 
			
				535 | 
		|
| 
				X70 | 
			
				0.26 | 
			- | 
				1.65 | 
			
				0.030 | 
			
				0.030 | 
			
				570 | 
			
				570 | 
		|
| 
				API 5L PSL2 | 
			
				B | 
			
				0.22 | 
			
				0.45 | 
			
				1.20 | 
			
				0.025 | 
			
				0.015 | 
			
				415 | 
			
				415 | 
		
| 
				X42 | 
			
				0.22 | 
			
				0.45 | 
			
				1.30 | 
			
				0.025 | 
			
				0.015 | 
			
				415 | 
			
				415 | 
		|
| 
				X46 | 
			
				0.22 | 
			
				0.45 | 
			
				1.40 | 
			
				0.025 | 
			
				0.015 | 
			
				435 | 
			
				435 | 
		|
| 
				X52 | 
			
				0.22 | 
			
				0.45 | 
			
				1.40 | 
			
				0.025 | 
			
				0.015 | 
			
				460 | 
			
				460 | 
		|
| 
				X56 | 
			
				0.22 | 
			
				0.45 | 
			
				1.40 | 
			
				0.025 | 
			
				0.015 | 
			
				490 | 
			
				490 | 
		|
| 
				X60 | 
			
				0.12 | 
			
				0.45 | 
			
				1.60 | 
			
				0.025 | 
			
				0.015 | 
			
				520 | 
			
				520 | 
		|
| 
				X65 | 
			
				0.12 | 
			
				0.45 | 
			
				1.60 | 
			
				0.025 | 
			
				0.015 | 
			
				535 | 
			
				535 | 
		|
| 
				X70 | 
			
				0.12 | 
			
				0.45 | 
			
				1.70 | 
			
				0.025 | 
			
				0.015 | 
			
				570 | 
			
				570 | 
		|
| 
				X80 | 
			
				0.12 | 
			
				0.45 | 
			
				1.85 | 
			
				0.025 | 
			
				0.015 | 
			
				625 | 
			
				625 | 
		|
| 
				GB/T 9711.1 | 
			
				L210 | 
			- | - | 
				0.90 | 
			
				0.030 | 
			
				0.030 | 
			
				335 | 
			
				335 | 
		
| 
				L245 | 
			- | - | 
				1.15 | 
			
				0.030 | 
			
				0.030 | 
			
				415 | 
			
				415 | 
		|
| 
				L290 | 
			- | - | 
				1.25 | 
			
				0.030 | 
			
				0.030 | 
			
				415 | 
			
				415 | 
		|
| 
				L320 | 
			- | - | 
				1.25 | 
			
				0.030 | 
			
				0.030 | 
			
				435 | 
			
				435 | 
		|
| 
				L360 | 
			- | - | 
				1.25 | 
			
				0.030 | 
			
				0.030 | 
			
				460 | 
			
				460 | 
		|
| 
				L390 | 
			- | - | 
				1.35 | 
			
				0.030 | 
			
				0.030 | 
			
				490 | 
			
				490 | 
		|
| 
				L415 | 
			
				0.26 | 
			- | 
				1.35 | 
			
				0.030 | 
			
				0.030 | 
			
				520 | 
			
				520 | 
		|
| 
				L450 | 
			
				0.26 | 
			- | 
				1.40 | 
			
				0.030 | 
			
				0.030 | 
			
				535 | 
			
				535 | 
		|
| 
				L485 | 
			
				0.23 | 
			- | 
				1.60 | 
			
				0.030 | 
			
				0.030 | 
			
				570 | 
			
				570 | 
		|
| 
				GB/T3091/ SY/T503 | 
			
				Q195 | 
			
				0.12 | 
			
				0.30 | 
			
				0.50 | 
			
				0.035 | 
			
				0.040 | 
			
				315 | 
			
				315 | 
		
| 
				Q215B | 
			
				0.15 | 
			
				0.35 | 
			
				1.20 | 
			
				0.045 | 
			
				0.045 | 
			
				335 | 
			
				335 | 
		|
| 
				Q235B | 
			
				0.20 | 
			
				0.35 | 
			
				1.40 | 
			
				0.045 | 
			
				0.045 | 
			
				370 | 
			
				370 | 
		|
| 
				Q345B | 
			
				0.20 | 
			
				0.50 | 
			
				1.70 | 
			
				0.035 | 
			
				0.035 | 
			
				470 | 
			
				470 | 
		|
| 
				ASTM A53 | 
			A | 
				0.25 | 
			
				0.10 | 
			
				0.95 | 
			
				0.050 | 
			
				0.045 | 
			
				330 | 
			
				330 | 
		
| B | 
				0.30 | 
			
				0.10 | 
			
				1.20 | 
			
				0.050 | 
			
				0.045 | 
			
				415 | 
			
				415 | 
		|
| 
				ASTM A252 | 
			1 | - | - | - | 
				0.050 | 
			- | 
				345 | 
			
				345 | 
		
| 2 | - | - | - | 
				0.050 | 
			- | 
				414 | 
			
				414 | 
		|
| 3 | - | - | - | 
				0.050 | 
			- | 
				455 | 
			
				455 | 
		|
| 
				EN10217-1 | 
			
				P195TR1 | 
			
				0.13 | 
			
				0.35 | 
			
				0.70 | 
			
				0.025 | 
			
				0.020 | 
			
				320 | 
			
				320 | 
		
| 
				P195TR2 | 
			
				0.13 | 
			
				0.35 | 
			
				0.70 | 
			
				0.025 | 
			
				0.020 | 
			
				320 | 
			
				320 | 
		|
| 
				P235TR1 | 
			
				0.16 | 
			
				0.35 | 
			
				1.20 | 
			
				0.025 | 
			
				0.020 | 
			
				360 | 
			
				360 | 
		|
| 
				P235TR2 | 
			
				0.16 | 
			
				0.35 | 
			
				1.20 | 
			
				0.025 | 
			
				0.020 | 
			
				360 | 
			
				360 | 
		|
| 
				P265TR1 | 
			
				0.20 | 
			
				0.40 | 
			
				1.40 | 
			
				0.025 | 
			
				0.020 | 
			
				410 | 
			
				410 | 
		|
| 
				P265TR2 | 
			
				0.20 | 
			
				0.40 | 
			
				1.40 | 
			
				0.025 | 
			
				0.020 | 
			
				410 | 
			
				410 | 
		|
| 
				EN10217-2 | 
			
				P195GH | 
			
				0.13 | 
			
				0.35 | 
			
				0.70 | 
			
				0.025 | 
			
				0.020 | 
			
				320 | 
			
				320 | 
		
| 
				P235GH | 
			
				0.16 | 
			
				0.35 | 
			
				1.20 | 
			
				0.025 | 
			
				0.020 | 
			
				360 | 
			
				360 | 
		|
| 
				P265GH | 
			
				0.20 | 
			
				0.40 | 
			
				1.40 | 
			
				0.025 | 
			
				0.020 | 
			
				410 | 
			
				410 | 
		|
| 
				EN10217-5 | 
			
				P235GH | 
			
				0.16 | 
			
				0.35 | 
			
				1.20 | 
			
				0.025 | 
			
				0.020 | 
			
				360 | 
			
				360 | 
		
| 
				P265GH | 
			
				0.20 | 
			
				0.40 | 
			
				1.40 | 
			
				0.025 | 
			
				0.020 | 
			
				410 | 
			
				410 | 
		|
| 
				EN10219-1 | 
			
				S235JRH | 
			
				0.17 | 
			- | 
				1.40 | 
			
				0.040 | 
			
				0.040 | 
			
				360 | 
			
				360 | 
		
| 
				S275JOH | 
			
				0.20 | 
			- | 
				1.50 | 
			
				0.035 | 
			
				0.035 | 
			
				410 | 
			
				410 | 
		|
| 
				S275J2H | 
			
				0.20 | 
			- | 
				1.50 | 
			
				0.030 | 
			
				0.030 | 
			
				410 | 
			
				410 | 
		|
| 
				S355JOH | 
			
				0.22 | 
			
				0.55 | 
			
				1.60 | 
			
				0.035 | 
			
				0.035 | 
			
				470 | 
			
				470 | 
		|
| 
				S355J2H | 
			
				0.22 | 
			
				0.55 | 
			
				1.60 | 
			
				0.030 | 
			
				0.030 | 
			
				470 | 
			
				470 | 
		|
| 
				S355K2H | 
			
				0.22 | 
			
				0.55 | 
			
				1.60 | 
			
				0.030 | 
			
				0.030 | 
			
				470 | 
			
				470 | 
		|
	
	
	Tolerance of Outside Diameter and Wall Thickness
| 
				Standard | 
			
				Tolerance of Pipe Body | 
			
				Tolerance of Pipe End | 
			
				Tolerance of Wall Thickness | 
		|||
| 
				Out Diameter | 
			
				Tolerance | 
			
				Out Diameter | 
			
				Tolerance | 
		|||
| 
				GB/T3091 | 
			
				OD≤48.3mm | 
			
				≤±0.5 | 
			
				OD≤48.3mm | 
			- | 
				≤±10% | 
		|
| 
				48.3 | 
			
				≤±1.0% | 
			
				48.3 | 
			- | |||
| 
				273.1 | 
			
				≤±0.75% | 
			
				273.1 | 
			
				-0.8~+2.4 | 
		|||
| 
				OD>508mm | 
			
				≤±1.0% | 
			
				OD>508mm | 
			
				-0.8~+3.2 | 
		|||
| 
				GB/T9711.1 | 
			
				OD≤48.3mm | 
			
				-0.79~+0.41 | 
			- | - | 
				OD≤73 | 
			
				-12.5%~+20% | 
		
| 
				60.3 | 
			
				≤±0.75% | 
			
				OD≤273.1mm | 
			
				-0.4~+1.59 | 
			
				88.9≤OD≤457 | 
			
				-12.5%~+15% | 
		|
| 
				508 | 
			
				≤±1.0% | 
			
				OD≥323.9 | 
			
				-0.79~+2.38 | 
			
				OD≥508 | 
			
				-10.0%~+17.5% | 
		|
| 
				OD>941mm | 
			
				≤±1.0% | 
			- | - | 
				- | 
			- | |
| 
				GB/T9711.2 | 
			
				60 | 
			
				±0.75%D~±3mm | 
			
				60 | 
			
				±0.5%D~±1.6mm | 
			
				4mm | 
			
				±12.5%T~±15.0%T | 
		
| 
				610 | 
			
				±0.5%D~±4mm | 
			
				610 | 
			
				±0.5%D~±1.6mm | 
			
				WT≥25mm | 
			
				-3.00mm~+3.75mm | 
		|
| 
				OD>1430mm | 
			- | 
				OD>1430mm | 
			- | - | 
				-10.0%~+17.5% | 
		|
| 
				SY/T5037 | 
			
				OD<508mm | 
			
				≤±0.75% | 
			
				OD<508mm | 
			
				≤±0.75% | 
			
				OD<508mm | 
			
				≤±12.5% | 
		
| 
				OD≥508mm | 
			
				≤±1.00% | 
			
				OD≥508mm | 
			
				≤±0.50% | 
			
				OD≥508mm | 
			
				≤±10.0% | 
		|
| 
				API 5L PSL1/PSL2 | 
			
				OD<60.3 | 
			
				-0.8mm~+0.4mm | 
			
				OD≤168.3 | 
			
				-0.4mm~+1.6mm | 
			
				WT≤5.0 | 
			
				≤±0.5 | 
		
| 
				60.3≤OD≤168.3 | 
			
				≤±0.75% | 
			
				168.3 | 
			
				≤±1.6mm | 
			
				5.0 | 
			
				≤±0.1T | 
		|
| 
				168.3 | 
			
				≤±0.75% | 
			
				610 | 
			
				≤±1.6mm | 
			
				T≥15.0 | 
			
				≤±1.5 | 
		|
| 
				610 | 
			
				≤±4.0mm | 
			
				OD>1422 | 
			
				- | 
			- | - | |
| 
				OD>1422 | 
			
				- | 
			- | 
				- | 
			- | - | |
| 
				API 5CT | 
			
				OD<114.3 | 
			
				≤±0.79mm | 
			
				OD<114.3 | 
			
				≤±0.79mm | 
			
				≤-12.5% | 
		|
| 
				OD≥114.3 | 
			
				-0.5%~1.0% | 
			
				OD≥114.3 | 
			
				-0.5%~1.0% | 
			
				≤-12.5% | 
		||
| 
				ASTM A53 | 
			
				≤±1.0% | 
			
				≤±1.0% | 
			
				≤-12.5% | 
		|||
| 
				ASTM A252 | 
			
				≤±1.0% | 
			
				≤±1.0% | 
			
				≤-12.5% | 
		|||