Tipos de tubos de acero | 							 				Los diámetros exteriores | 							 				Espesor de pared. | 		||
				 				Los tubos laminados en frío | 							 				Tamaños de tubo (mm) | 							 				Tolerancias(mm) | 							 				Tamaños de tubo (mm) | 							 				Tolerancias(mm) | 		
				 				> 30~50 | 							 				±0, 3 | 							 				> 3~20 | 							 				±10%. | 		
				 				 				 				Los códigos estándar | 							 				Los modelos de tubos de acero | 							 				La fuerza Tensite(SM) | 							 				Límite de fluencia (MPa) | 							 				La elongación(%) | 							 				La dureza | 		
				 				GB3087 | 							 				10 | 							 				335~475 | 							 				≥195 | 							 				≥24 | 							 				/ | 		
				 				20 | 							 				410~550 | 							 				≥245 | 							 				≥20 | 							 				/ | 		|
				 				GB5310 | 							 				20G | 							 				410~550 | 							 				≥245 | 							 				≥24 | 							 				/ | 		
				 				20MnG | 							 				≥415 | 							 				≥240 | 							 				≥22 | 							 				/ | 		|
				 				25MnG | 							 				≥485 | 							 				≥275 | 							 				≥20 | 							 				/ | 		|
				 				15CrMoG | 							 				440~640 | 							 				≥235 | 							 				≥21 | 							 				/ | 		|
				 				12Cr2MoG | 							 				450~600 | 							 				≥280 | 							 				≥20 | 							 				/ | 		|
				 				12Cr1MoVG | 							 				470~640 | 							 				≥255 | 							 				≥21 | 							 				/ | 		|
				 				12Cr2MoWVTiB | 							 				540~735 | 							 				≥345 | 							 				≥18 | 							 				/ | 		|
				 				10Cr9Mo1VNb | 							 				≥585 | 							 				≥415 | 							 				≥20 | 							 				/ | 		|
				 				ASME SA210 | 							 				SA210A-1 | 							 				≥415 | 							 				≥255 | 							 				≥30 | 							 				≤ 143 HB | 		
				 				SA210C | 							 				≥485 | 							 				≥275 | 							 				≥30 | 							 				≤ 179 HB | 		|
				 				ASME SA213 | 							 				SA213 T11 | 							 				≥415 | 							 				≥205 | 							 				≥30 | 							 				≤ 163 HB | 		
				 				SA213 T12 | 							 				≥415 | 							 				≥220 | 							 				≥30 | 							 				≤ 163 HB | 		|
				 				SA213 T22 | 							 				≥415 | 							 				≥205 | 							 				≥30 | 							 				≤ 163 HB | 		|
				 				SA213 T23 | 							 				≥510 | 							 				≥400 | 							 				≥20 | 							 				≤ 220 HB | 		|
				 				SA213 T91 | 							 				≥585 | 							 				≥415 | 							 				≥20 | 							 				≤ 250 HB | 		|
				 				SA213 T92 | 							 				≥620 | 							 				≥440 | 							 				≥20 | 							 				≤ 250 HB | 		|
				 				La norma DIN17175 | 							 				ST45.8/III | 							 				410~530 | 							 				≥255 | 							 				≥21 | 							 				/ | 		
				 				15Mo3 | 							 				450~600 | 							 				≥270 | 							 				≥22 | 							 				/ | 		|
				 				13CrMo44 | 							 				440~590 | 							 				≥290 | 							 				≥22 | 							 				/ | 		|
				 				10CrMo910 | 							 				480~630 | 							 				≥280 | 							 				≥20 | 							 				/ | 		
				 				 				 				Los códigos estándar | 							 				Los modelos de tubos de acero | 							 				Composiciones químicas(%) | 		||||||||||||||
				 				C | 							 				Si | 							 				Mn | 							 				P | 							 				S | 							 				Cr | 							 				Mo | 							 				Cu | 							 				Ni | 							 				V | 							 				Al. | 							 				W | 							 				Ti | 							 				N. B. | 							 				N | 		||
				 				GB3087 | 							 				10 | 							 				0.07~0.13 | 							 				0.17~0, 37 | 							 				0.38~0.65 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				0.3~065 | 							 				/ | 							 				≤0, 25 | 							 				≤0, 30 | 							 				/ | 							 				/ | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		
				 				20 | 							 				0.17~0.23 | 							 				0.17~0, 37 | 							 				0.38~0.65 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				0.3~065 | 							 				/ | 							 				≤0, 25 | 							 				≤0, 30 | 							 				/ | 							 				/ | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				GB5310 | 							 				20G | 							 				0.17~0.24 | 							 				0.17~0, 37 | 							 				0.35~0.65 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				≤0, 25 | 							 				≤0, 15 | 							 				≤0, 20 | 							 				≤0, 25 | 							 				≤0, 08 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		
				 				20MnG | 							 				0.17~0.24 | 							 				0.17~0, 37 | 							 				0.70~1.00 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				≤0, 25 | 							 				≤0, 15 | 							 				≤0, 20 | 							 				≤0, 25 | 							 				≤0, 08 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				25MnG | 							 				0.18~0.24 | 							 				0.17~0, 37 | 							 				0.80~1.10 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				≤0, 25 | 							 				≤0, 15 | 							 				≤0, 20 | 							 				≤0, 25 | 							 				≤0, 08 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				15CrMo | 							 				0.12~0.18 | 							 				0.17~0, 37 | 							 				0.40~0.70 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				0.80~1.10 | 							 				0.40~0.55 | 							 				≤0, 20 | 							 				≤0, 30 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				12Cr2MoG | 							 				0.08~0, 15 | 							 				≤0, 50 | 							 				0.40~0.70 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				2.00~2.50 | 							 				0.90~1.20 | 							 				≤0, 20 | 							 				≤0, 30 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				12Cr1MoV | 							 				0.08~0, 15 | 							 				0.17~0, 37 | 							 				0.40~0.70 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				0.90~1.20 | 							 				0.25~0.35 | 							 				≤0, 20 | 							 				≤0, 30 | 							 				0.15~0.30 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				12Cr2MoWVTiB | 							 				0.08~0, 15 | 							 				0.45~0, 75 | 							 				0.45~0.65 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				1.60~2.10 | 							 				0.50~0.65 | 							 				≤0, 20 | 							 				≤0, 30 | 							 				0.28~0.42 | 							 				 				 | 							 				0.30~0.55 | 							 				0.08~0, 15 | 							 				B 0.002~0.008 | 							 				 				 | 		|
				 				10Cr9Mo1VNb | 							 				0.08~0.12 | 							 				0.20~0.50 | 							 				0.30~0, 60 | 							 				≤ 0.020 | 							 				≤ 0.010 | 							 				8.00~9.50 | 							 				0.85~1.05 | 							 				≤0, 20 | 							 				≤0, 40 | 							 				0.18~0.25 | 							 				≤ 0.015 | 							 				 				 | 							 				 				 | 							 				0.06~0.10 | 							 				0.03~0.07 | 		|
				 				ASME SA210 | 							 				SA210A-1 | 							 				0.13~0.19 | 							 				≥0, 1 | 							 				0.45~0.65 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		
				 				SA210C | 							 				0.18~0.24 | 							 				≥0, 1 | 							 				0.80~1.10 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				ASME SA213 | 							 				SA213 T11 | 							 				0.05~0, 15 | 							 				0.50~1.0 | 							 				0.30~0, 60 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				1.00~1.50 | 							 				0.50~1.00 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		
				 				SA213 T12 | 							 				0.05~0, 15 | 							 				≤0, 50 | 							 				0.30~0.61 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				0.80~1.25 | 							 				0.44~0.65 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				SA213 T22 | 							 				0.05~0, 15 | 							 				≤0, 50 | 							 				0.30~0, 60 | 							 				≤ 0.030 | 							 				≤ 0.010 | 							 				1.90~2, 60 | 							 				0.87~1.13 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				SA213 T23 | 							 				0.04~0.10 | 							 				≤0, 50 | 							 				0.10~0, 60 | 							 				≤ 0.030 | 							 				≤ 0.030 | 							 				1.90~2, 60 | 							 				0.05~0.30 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				≤ 0.030 | 							 				1.45~1, 75 | 							 				B0.0005~0.006 | 							 				0.02~0.08 | 							 				≤ 0.040 | 		|
				 				SA213 T91 | 							 				0.08~0.12 | 							 				0.20~0.50 | 							 				0.30~0, 60 | 							 				≤ 0.020 | 							 				≤ 0.010 | 							 				8.00~9.50 | 							 				0.85~1.05 | 							 				 				 | 							 				≤0, 40 | 							 				0.18~0.25 | 							 				≤ 0.015 | 							 				 				 | 							 				 				 | 							 				0.06~0.10 | 							 				0.03~0.07 | 		|
				 				SA213 T92 | 							 				0.07~0.13 | 							 				≤0, 50 | 							 				0.30~0, 60 | 							 				≤ 0.020 | 							 				≤ 0.010 | 							 				8.50~9.50 | 							 				0.30~0, 60 | 							 				 				 | 							 				≤0, 40 | 							 				0.15~0.25 | 							 				≤ 0.015 | 							 				1.50~2.00 | 							 				B 0.001~0.006 | 							 				0.04~0.09 | 							 				0.03~0.07 | 		|
				 				La norma DIN 17175 | 							 				ST45.8/III | 							 				≤0, 21 | 							 				0.10~0.35 | 							 				0.40~1.20 | 							 				≤ 0.040 | 							 				≤ 0.040 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		
				 				15Mo3 | 							 				0.12~0.20 | 							 				0.10~0.35 | 							 				0.40~0, 80 | 							 				≤0, 035 | 							 				≤0, 035 | 							 				 				 | 							 				0.25~0.35 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				13CrMo44 | 							 				0.10~0.18 | 							 				0.10~0.35 | 							 				0.40~0.70 | 							 				≤0, 035 | 							 				≤0, 035 | 							 				0.70~1.10 | 							 				0.45~0.65 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 		|
				 				10CrMo910 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 | 							 				 				 |