Seamless Steel Pipe for Petroleum Cracking

• Type: Seamless
• Technique: Cold Rolled and Hot Rolled
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Oil/Gas Drilling
• Section Shape: Round
• Model NO.: seamless steel pipe
• Size: 30mm~610mm
• Thickness: 3mm~10mm
• Length: Fixed Length, by Random
• End Processing: Bevel Ends, Plain Ends
• Surface: Black Painting, Oil Coating
• Transport Package: Standard Seaworthy Packing
• Specification: API 5L
• Trademark: Iron&steel
• Origin: China
• HS Code: 7306
• Production Capacity: 2000tons Per Month

Product Description

Seamless steel tubes for petroleum cracking
Standard:
GB9948 Chinese national standard
Application:
Served as for furnace tubes,heat exchange tubes and pipelines in petroleum and refinery plants
Model No.of major steel tubes:
1n 9n 1ErrMn 1rhMn 1f:hM0 etC

Diamensional tolerances:

Types of steel tubes	Outer diameter		Wall thickness
Cold-rolled tubes	Tube sizes(mm)	Tolerances(mm)	Tube sizes (mm)	Tolerances(mm)
	>30~50	±0.3	≤30	±10%
	>50~219	±0.8%
Hot-rolled tubes	>219	±1.0%	>20	±10%

Mechanical properties:

Standard codes	Models of steel tubes	Tensile(MPa)	Yield(MPa)	Elongation(%)	Impact(J)	hardness(HB)
GB9948	10	330~490	≥205	≥24	/	/
	20	410~550	≥245	≥21	≥39	/
	15CrMo	440~640	≥235	≥21	≥47	≤170
	1Cr2Mo	≥390	≥175	≥22	≥92	≤179
	1Cr5Mo	≥390	≥195	≥22	≥92	≤187

 
Chemical composition:

Standard codes	Models of steel tubes	Chemical compositions(%)
		C	Si	Mn	P	S	Cr	Mo	Ni
GB9948	10	0.07~0.14	0.17~0.37	0.35~0.65	≤0.035	≤0.035	≤0.15	/	≤0.25
	20	0.17~0.24	0.17~0.37	0.35~0.65	≤0.035	≤0.035	≤0.25	/	≤0.25
	15CrMo	0.12~0.18	0.17~0.37	0.40~0.70	≤0.035	≤0.035	0.80~1.10	0.40~0.55	≤0.30
	1Cr2Mo	≤0.15	0.50~1.00	0.30~0.60	≤0.035	≤0.030	2.15~2.85	0.45~0.65	/
	1Cr5Mo	≤0.15	≤0.50	≤0.60	≤0.035	≤0.030	4.00~6.00	0.45~0.60	≤0.60