Welded Steel Pipe

Welded steel pipes and tube are used in a number of applications where high demands are set on reliability, strength and corrosion resistance. These high performance pipes and tube are alloyed with higher contents of molybdenum and nitrogen in order to improve the corrosion resistance and the strength, and are welded with over alloyed filler metals and/or with nitrogen added to the shielding gas, in order to become as high pitting corrosion resistance as possible in the weld.

Grade: Q195,Q215,Q235,Q275,Q295,Q345
OD: 21.3-219mm
WT: 0.8-8.5mm
Length: 1-12m
CGXY supply welded price (LSAW, ERW, SPIRAL)

Standard codes	Models of steel tubes	Chemical compositions
Standard codes	Models of steel tubes	C	SI	Mn	P	S	Cr	Mo	Cu
GB3087	10	0.07-0.13	0.17-0.37	0.38-0.65	≤0.030	≤0.030	0.30.65	/	≤0.25
GB3087	20	0.17-0.23	0.17-0.37	0.38-0.65-	≤0.030	≤0.030	0.30.65		≤0.250
GB5310	20G	0.17-0.24	0.17-0.37	0.35-0.65	≤0.030	≤0.030	≤0.25	≤0.15	≤0.20
	20MnG	0.17-0.25	0.17-0.37	0.70-1.00	≤0.030	≤0.030	≤0.25	≤0.15	≤0.20
	25MnG	0.23-0.27	0.17-0.37	0.70-1.00	≤0.030	≤0.030	≤0.25	≤0.15	≤0.20
	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
	12Cr2Mn	0.08-0.15	≤0.50	0.40-0.70	≤0.030	≤0.030	2.00-2.50	0.90-1.20	≤0.20
	12Cr1MnV	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
	10Cr9Mo1V Nb	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
ASME SA106	SA106B	0.17-0.25	≥0.1	0.7-1.00	≤0.030	≤0.030
ASME SA106	SA106C	0.23-0.27	≥0.1	0.70-1.00	≤0.030	≤0.030
ASME SA333	SA333	0.09-0.12		0.7-1.00	≤0.030	≤0.030
ASME SA333	SA333	0.09-0.12	≥0.1	0.9-1.10	≤0.030	≤0.030
ASME SA335	SA335 P11	0.05-0.15	0.50-1.0	0.30-0.60	≤0.030	≤0.030	1.00-1.50	0.50-1.00
	SA33512	0.05-0.15	≤0.50	0.30-0.60	≤0.030	≤0.030	0.80-1.25	0.44-0.65
	SA335 P22	0.05-0.15	≤0.05	0.30-0.60	≤0.030	≤0.030	1.90-2.60	0.87-1.13
	SA335 P5	≤	≤0.05	0.30-0.60	≤0.030	≤0.030	4.00-6.00	0.45-0.65
	SA335 P91	0.08-0.12	0.20-0.50	0.30-0.60	≤0.020	≤0.020	8.00-9.50	0.85-1.05