316 304 316L Heat Exchanger Stainless Steel Coil Tube 6mm Diameter

• After-sales Service: Bending,Welding,Cutting,Decoiling
• Type: Seamless
• Technique: Cold Rolled
• Material: Stainless Steel
• Surface Treatment: Polished
• Usage: Boiler Pipe, Machinery Industry, Construction & Decoration
• Section Shape: Round
• Transport Package: Standard Packing
• Specification: Length: 6M or as requirement
• Trademark: zhongding
• Origin: China
• Production Capacity: 2000tonnes Per Week

Product Description

U Shape Steel Bending Tube Stainless Steel Tube/Pipe Bending U Tube

 

Product description

Standard	ASTM A554,ASTM A312
Material Grade	201,202,304,316,316L,430,409L,430,410,420J1,420J2
Main Material	a) 201 (Ni0.8%-1%)    b) 202 (Ni: 3.0%-4.0%) c) 304 (Ni: 8%  Cr: 18%) d) 316 (Ni: 10%  Cr: 18%)
Size Range	OD:6.35mm- 273mm
Thickness	0.5-30mm
Length	6m or as customers' request
Tolerance	a) Outer Diameter:  +/- 0.2mm
	b) Thickness: +/- 0.02mm
	c) Length: +/- 5mm
Surface	180G, 320G Satin/Hairline 400G, 600G  Mirror finish
Application	handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,Heat exchanger Feedwater Heater,etc
Test	Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT
	Tensile Strength	≥535	≥520	≥520	≥520
	Yield Strength	≥245	≥205	≥205	≥205
	Extension	≥30%	≥30%	≥35%	≥35%
	Hardness (HV)	<105	<100	<90	<90

Features :

• 'U' bending is done by cold working process.
• 'U' bending is done to the required radius as per customer drawings.
• The bend portion and six inch leg is stress relieved by resistance heating.
• Inert gas (Argon) is passed through it at the required flow rate to avoid oxidation in ID.
• The radius is checked for its OD and wall thinning with the recommended specification.
• The physical properties and micro-structure is checked at three different position.
• Visual inspection for waviness and cracks is done with Dye Penetrant Test.
• Each tube is then hydro tested at the recommended pressure to check for leakage.
• Cotton ball test is done to check the ID cleanliness of the tube.
• Thereafter pickled, dried, marked and packed.