Black Pipe

Factory Sale High Quality ASTM A106 Sch 40 ERW Iron Tube, ERW Weld Carbon Steel Pipe.jpg

Factory Sale High Quality ASTM A106 Sch 40 ERW Iron Tube, ERW Weld Carbon Steel Pipe (2).jpg

Factory Sale High Quality ASTM A106 Sch 40 ERW Iron Tube, ERW Weld Carbon Steel Pipe (1).png

Factory Sale High Quality ASTM A106 Sch 40 ERW Iron Tube, ERW Weld Carbon Steel Pipe (4).jpg

Factory Sale High Quality ASTM A106 Sch 40 ERW Iron Tube, ERW Weld Carbon Steel Pipe (3).jpg

Factory Sale High Quality ASTM A106 Sch 40 ERW Iron Tube, ERW Weld Carbon Steel Pipe (1).jpg

Factory Sale High Quality ASTM A106 Sch 40 ERW Iron Tube, ERW Weld Carbon Steel Pipe

The welding process of the erw pipe is to use the skin-receiving principle generated by the high-frequency current to heat the edge of the hot-rolled coil to a molten state, and then perform welding by a mechanical extrusion method. The steel pipe produced by the process will have a white fusion line at the center of the weld, and the heat-affected zone on both sides of the fusion line will have a metal flow line extending from the middle to the inner and outer surfaces. Since the erw pipe is made of a base material as a welding material, the performance of the weld seam has a great relationship with the performance of the base material. In ordinary materials, the ductile-brittle transition temperature curve of the weld and the base metal. In ordinary materials, the difference in absorbed energy values between the weld and the base material in the Charpy impact test is small. On the contrary, there is a big difference in the high toughness material, and the weld impact toughness is obviously inferior to the base metal, but it is obviously superior to the weld of the ordinary material.

Size: 1/2"-24" (20～610mm)
Wall thickness: 0.6～30mm
Surface: oiled/painting/galvanized
Length: 3～12m

product details

SMSTEELPRODUCT DESCRIPTION

It can be seen that the impact toughness of the weld center of the high-frequency steel pipe is generally lower than that of the base material. Even if the toughness material is used, although the toughness of the weld is improved, the impact toughness of the weld center cannot be completely improved.

Factors affecting weld impact toughness

The main factors affecting the impact toughness of welds are:

(1) Physical and chemical properties of raw materials;

(2) Crystal materials and non-metallic inclusions of raw materials;

(3) Heat treatment conditions of welds;

(4) Molding conditions;

(5) Welding conditions;

SMSTEELERW STEEL PIPE more detials

ERW STEEL PIPE
Outer Diameter	1/2"-20"
Outer Diameter	20mm-508mm
Wall Thickness	0.6mm-20mm
Length	1m-5.8m/6m/11.8m/12m, or random length as client's requests
Tolerance	±5%
Surface Treatment	Galvanized(hot dip and pre-gal.); Color painted; Electroplating; Oiled, Powder coated, 3LPE, PVC coated or as clients’ requirement
Standards	ASTM A53,BS1387-85,GB/T3091-2001,DIN2440,JIS-G3444,EN10255,GB/T 9711-2011, DIN EN10210, API 5L PSL1, PSL2, API 5CT ect.
Material	Q195, Q215, Q235A-B, Q345A-E, 16Mn, ASTM A36,ASTM A500, ASTM A53, ASTM 106, SS400, St37, St52, S235JR, S355TRH etc.
Certificate	IS0 9001:2000
End Treatment	Plain end; Beveled; Threaded with sockets/coupling and plastic caps
Packaging	In bundles; PVC export packing; or as client's requests
Usage	Scaffolding pipe; Structure pipe; Fence/Door pipe; Furniture;
Usage	Low pressure fluid pipe for water, oil or gas; Boiler pipe
Delivery Time	10days from stock; 20-30days produced according to the qty
Payment Term	T/T; L/C
Price Term	CIF; CFR; FOB Tianjin, China; EXW
Loading Port	Tianjin, China
MOQ	One container
Others	1.All the pipes is high-frequency welded.
	2.Both inner and outer welded stab can be removed.
	3.Special design available according to requirement.
	4.Pipe can be necked down and punched holes.
	5.Supplying BV or SGS Inspection if client need.

SMSTEELTransaction information

MOQ: 5ton of each size

Price: USD400~650/TON

payment method: 30% deposit in advance, the balance against the copy of B/L; or 100% L/C, etc

Supply Capacity: 10000TONS/MONTH

Period for dispatch: 10~15 days after received your deposit

Conventional packaging: In bundles with steel strip,water proof plastic packing or in bulk

SMSTEELthe uses of welded steel pipes?

1. Welded steel pipe (GB/T3092) for low-pressure fluid transportation is also called general welded pipe, commonly known as black pipe. It is a welded steel pipe used to transport water, gas, air, oil, heating steam and other general lower pressure fluids and other purposes. The wall thickness of steel pipe connections is divided into ordinary steel pipes and thickened steel pipes; the connection end forms are divided into unthreaded steel pipes (plain pipes) and threaded steel pipes.

The specifications of steel pipes are expressed in nominal diameter (mm), which is an approximate value of the inner diameter. It is customary to express it in inches, such as 11/2, etc. In addition to being directly used to transport fluids, welded steel pipes for low-pressure fluid transportation are also widely used as the original pipes for galvanized welded steel pipes for low-pressure fluid transportation.

2. Galvanized welded steel pipe for low-pressure fluid transportation (GB/T3091) is also called galvanized electric welded steel pipe, commonly known as white pipe. It is a hot-dip galvanized welded (furnace welded or electric welded) steel pipe used to transport water, gas, air oil, heating steam, heating, water and other general lower pressure fluids or other purposes. The wall thickness of the steel pipe connection is divided into ordinary galvanized steel pipe and thickened galvanized steel pipe; the connection end form is divided into non-threaded galvanized steel pipe and threaded galvanized steel pipe. The specifications of steel pipes are expressed in nominal diameter (mm), which is an approximate value of the inner diameter. It is customary to express it in inches, such as 11/2, etc.

3. Ordinary carbon steel wire casing (GB3640) is a steel pipe used to protect wires in electrical installation projects such as industrial and civil buildings and installation of machinery and equipment.
4. Straight seam electric welded steel pipe (YB242) is a steel pipe with the weld seam parallel to the longitudinal direction of the steel pipe. Usually divided into metric electric welded steel pipes, electric welded thin-walled pipes, transformer cooling oil pipes, etc.