EN10217-7 1.4404 Stainless Steel Welded Pipe for Waste Water Treatment Plant

EN 10217-7 is a European standard that specifies the technical delivery conditions for welded stainless steel pipes for pressure applications. The standard covers a range of steel grades, including 1.4401 and 1.4404, commonly known as 316 and 316L stainless steels.

 

1.4404 stainless steel pipe supplied by GNEE is an austenitic stainless steel with high corrosion resistance and excellent mechanical properties. Welded pipes produced in accordance with EN 10217-7, 1.4401/1.4404, are typically used for conveying pressurized fluids. They are manufactured using a variety of welding techniques, including TIG welding, plasma welding, and laser welding. These pipes are available in a variety of sizes and wall thicknesses to meet diverse application requirements. In addition to the technical delivery conditions, EN 10217-7 also specifies testing and inspection requirements for welded pipes, including non-destructive testing (NDT) such as ultrasonic testing and visual inspection to ensure that the pipes meet the required quality standards.

 

Specification:

Specification	EN10217-7
Grades	TP316/316L; 1.4401/1.4404
Type	Straight welded pipe
Outer Diameter	10.2mm to 1016mm or custom size
Wall Thickness	1.0mm to 14.2mm or custom thickness
Length	6 meters or custom cut lengths
Delivery Condition	Solution Annealed & Pickled
Ends	Plain End, Beveled End
Other Testing	Product Analysis, Eddy Current Test, Hydrostatic Test, Radiographic Test, Ultrasonic Test, Flattening Test, Hardness Test, Tensile Test etc.
Dimension	All Pipes are Manufactured and Inspected / Tested to the Relevant standards
Packing	Plywood case/Woven bag in bundle

Chemical Composition:

Grade	UNS	C	Mn	P	S	Si	Cr	Ni	Mo	N
TP316	S31600	0.08 max	2.00 max	0.045 max	0.03 max	1.00 max	16.0-18.0	10.0-14.0	2.00-3.00	/
TP316L	S31603	0.035 max	2.00 max	0.045 max	0.03 max	1.00 max	16.0-18.0	10.0-14.0	2.00-3.00	/
1.4401	/	0.07 max	2.00 max	0.045 max	0.015 max	1.00 max	16.5-18.5	10.0-13.0	2.00-2.50	0.11 max
1.4404	/	0.03 max	2.00 max	0.045 max	0.015 max	1.00 max	16.5-18.5	10.0-13.0	2.00-2.50	0.11 max

Mechanical Properties:

Grade	Tensile Strength, min, ksi (MPa)	Yield Strength, min, ksi (MPa)	Elongation in 2 in. or 50mm, min (%)
TP316	515	205	35
TP316L	485	170	35
1.4401	510-710	205	40
1.4404	490-690	190	40

 

Application:

1. Chemical Processing: The high corrosion resistance of EN10217-7 1.4404 welded pipe makes it ideal for use in chemical processing plants where it is exposed to harsh chemicals and corrosive environments.
2. Oil and Gas Industry: SS 1.4404 welded pipe is used in the oil and gas industry for transporting oil, gas, and other fluids. The pipe's high strength and corrosion resistance make it ideal for use in harsh environments.
3. Water Treatment: EN10217-7 1.4404 stainless steel welded pipe is used in water treatment plants due to its resistance to corrosion and its ability to withstand high pressure and temperature.

 

Packaging and Marking:
Packaged in bales or laminated wooden crates, wrapped in plastic, and with appropriate protective measures to ensure seaworthiness for transport, or as required.
Marking must comply with EN10217-7/EN10217-7M. Marking must include information on whether the pipe is hot-finished or cold-finished, including but not limited to: standard, grade, size, heat number, and batch number.