Cold Rolled Black Annealed Steel Tube

• Customization: Available
• Type: Welded
• Technique: ERW
• Model NO.: Black Annealed Steel Tube
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Construction & Decoration
• Section Shape: Rectangular
• Transport Package: PVC Packing
• Specification: Thickness: 0.6-15mm Outer Diameter: 12*12-500*500
• Origin: China
• Production Capacity: 10000t/Months

Product Description

Product description

 

Product Name	galvanised rectangular hollow section steel tube 20x30 mm
Size	outer dimmater	10*10mm-100*100mm
	length	normal size is 6m, depends on customers' requirement
	wall thickness	0.45-2mm
Section shape	Square, regtancular,round
Standard	ASTMA500,ASTM A53,  EN10217, EN10219,   DIN10255,DIN2440,DIN2444, BS1387,BSEN39, BS1139, JIS G3452,JIS G3444,   ISO65
Material	Q195/Q235/Q345/A53 GR A,B/SS400/STK400/S235/S275 etc
Surface Treatment	Pre dipped (Zn Coating 30-40g/m2) Paint oil; Varnish; Hot galvanized; Cold galvanized; Galvanize the raw strip steel; Or according to customer's requirements.
Usage	(1) Structure, frame
	(2) Construction, building
	(3) Fence, door pipe
	(4) Greenhouse
	(5) Bridge, highway
Package	Usually Plain ,But Can Be Beveled Or By Your Choice
	(1) Bundle
	(2) Bundle with PVC wrapped
	(3) Loose pieces & nested
	(4) As customers' requirement
Payment	(1) T/T 30% in advance, balance against copy of B/L.
	(2) 100% irrevocable L/C at sight.

Production process



Product detail display

                                   ERW HOLLOW SECTIONS(SHS, RHS&CHS).
the bending process after the It used the hot rolled stnp or sheet for the blank shape by
frequency welding as a Square, Rectangular& Circular cross-section made of steel shapes
and sizes
                                    LSAW HOLLOW SECTIONS(CHS)
Used the cut deal as raw material, the steel plate in the molding machine press(volume)into
the tube, using double-sided submerged arc welding and expanding into the production
Standards and Materials
EN10210/EN10219(S275J0H, $355JRH, S355J0H, $355J2H) ASTM A500(Gr B, Gr C). JIS
G3466(STKR400, STKR490)etc.
Hot finished hollow section
EN10210 standard or the customer need the heat treatment, cold formed hollow sections
with subsequent heat treatment to obtan the properties

Product application

1.  Non-Residential construction: commercial and industrial construction, signage
2.  Residential construction: structural frames
3.  Transport truck and trailer chassis, caravan chassis
4.  Government applications(bus shelters, park seating)
5.  Rural: tillage implements, livestock handling (fence panels)
6.  Manufacturing:  lifting equipment, gym equipment
7.  Mining: conveyor equipmen

Quality inspection

 

Packaging and transportation
Usually Plain ,But Can Be Beveled Or By Your Choice
(1) Bundle

(2) Bundle with PVC wrapped

(3) Loose pieces & nested



Our company

Tianjin Jinxinbao Mental Surface Treatment Co.,LTD .We were founded in 2012, with the headquarters
location at the larges twelded pipe production based in china-Yangjiayuan Town,Tianjin city,which is the
most professional manufactuer of galvanized steel products in this area. There have total 6 galvanized
production lines ,about 200 employees and  annual production morethan 200000 tons .

In the 2016, in order to meet client requirements, we built a after-processing factory, whose named is
Tianjin Baojing New Energy Technology Co.,LTD , which produced all kinds of customized products
and sucessful supply for many PV projects .

As the export's window, Tianjin Shengteng Internatinal Trading Co.,LTD , manily exporting the factory's
galvanized steelproducts, especially galvanized steel pipe ,square and rectangular steel tube, seamless steel pipe ,ERW steel pipe, galvanizedsteel coil/sheets ,scaffolding steel props, PV mounting system .

In the past ,we get good feed back from old clients, and we will more fouce on the quality and improve
the service to thankful each client in the future.

FAQ

Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 20 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is
according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.