公称外径 ／mm	公称壁厚／mm
	1.5	2.0	2.5	3.0	3.5	4.0	4.5	5.0	6.0
	理论质量／(kg／m)
10	0.314	0.395	0.462
12	0.388	0.493	0.586
14		0.592	0.709	0.814
16		0.691	0.832	0.962
17		0.740	0.894	1.04
18		0.789	0.956	1.11
19		0.838	1.02	1.18
20		0.888	1.08	1.26
22		0.986	1.20	1.41	1.60	1.78

公称外径 ／mm	公称壁厚／mm
	1.5	2.0	2.5	3.0	3.5	4.0	4.5	5.0	6.0
	理论质量／(kg／m)
25		1.13	1.39	1.63	1.86	2.07
30		1.38	1.70	2.00	2.29	2.56
32			1.82	2.15	2.46	2.76
35			2.00	2.37	2.72	3.06
38			2.19	2.59	2.98	3.35
40			2.31	2.74	3.15	3.55
42			2.44	2.89	3.32	3.75	4.16	4.56
45			2.62	3.11	3.58	4.04	4.49	4.93
48			2.81	3.33	3.84	4.34	4.83	5.30
51			2.99	3.55	4.10	4.64	5.16	5.67
57				4.00	4.62	5.23	5.83	6.41
60				4.22	4.88	5.52	6.16	6.78
63.5				4.44	5.14	5.82	6.49	7.15
70				4.96	5.74	6.51	7.27	8.01	9.47
76					6.26	7.10	7.93	8.75	10.36
83					6.86	7.79	8.71	9.62	11.39
89						8.38	9.38	10.36	12.38
102						9.67	10.82	11.96	14.21
108						10.26	11.49	12.70	15.09
114						10.85	12.12	13.4.4	15.98

20g锅炉管材质成分

标准	牌号	化学成分
		C	Si	Mn	P	S	Cr	Mo	Cu	Ni
GB5310	20G	0.17-0.24	0.17-0.37	0.35-0.65	≤0.030	≤0.030	/	/	≤0.20	≤0.25	/
	20MnG	0.17-0.24	0.17-0.37	0.70-1.00	≤0.030	≤0.030	/	/	≤0.20	≤0.25	/
	15MoG	0.12-0.18	0.17-0.37	0.40-0.80	≤0.030	≤0.030	/	0.25-0.35	≤0.20	≤0.30	/
	15CrMoG	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	/
	12Cr1MoVG	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	0.15-0.35

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