Wholesale Factory Price 301 302 303 Square Stainless Steel Tube Manufacturer and Supplier

Factory Price 301 302 303 Square Stainless Steel Tube

Short Description:

Stainless steel square tube

Rectangular tube is a name for square coffin and rectangular coffin, that is, steel tubes with equal and unequal side lengths. It is made of strip steel after process treatment. Generally, the strip steel is unpacked, flattened, crimped, and welded to form a round tube, and then the round tube is rolled into a square tube and then cut to the required length.

Stainless steel rectangular tube is a kind of hollow long strip of steel with a rectangular section, so it is called a rectangular tube.

Type: Welded

Steel Grade: 200 Series, 301, 310S, 410, 316Ti, 316L, 441, 316, 420J1, 321, 443, 314, 347, 430, 309S, 304, 439, 409L, 420J2, 436, 445, 304L, 405, 370, 904L, 444, 305, 429, 304J1, 317L

Welding Line Type: ERW

Processing Service: Bending, Welding, Decoiling, Punching, Cutting, Moulding

Length: Customers' Requirements

Colors: Golden, Silver,Customzied

Inspection: SGS, TUV, BV, Factory Inspection

Price Term: CIF CFR FOB EX-WORK

Payment: L/C, T/T, D/P

Delivery Time: 3-15 days (according to the actual tonnage)

Port Information: Tianjin Port, Shanghai Port, Qingdao Port, etc.

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Product Detail

Product Tags

Product Detail

Length	As required
Thickness	0.5-100mm or as required
Standard	ASTM A213,A312,ASTM A269,ASTM A778,ASTM A789,DIN 17456, DIN17457,DIN 17459,JIS G3459,JIS G3463,GOST9941,EN10216, BS3605,GB13296
Technique	Hot Rolled , Cold Rolled , Extrusion
Surface	Polishing
Thickness Tolerance	±0.01mm
Material	304,304L,309S,310S,316,316Ti,317,317L,321,347,347H,304N,316L, 316N,201,202
Application	Widely used in petroleum,foodstuff,chemical industry,construction, electric power,nuclear,energy,machinery,biotechnology,paper making,shipbuilding,boiler fields. Pipes also can be made according to the customer's required.
MOQ	1 ton , We can accept sample order.
Shipment Time	Within 7-15 workdays after receiving deposit or L/C
Export Packing	Standard seaworthy export packing or according to the customers' request
Capacity	25000 Ton/Tons per Month
Length	As required

Main Application

Widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railways, highway guardrails, container skeletons, furniture, decoration and steel structures. In addition, with the same bending strength and torsional strength, it is lighter in weight, so it is also widely used in the manufacture of mechanical parts and engineering structures. It is also commonly used in the production of various conventional weapons, barrels, shells, etc.

Note:
1.Free sampling, 100% after-sales quality assurance, Support any payment method;
2.All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.

Stainless Steel Pipe Chemical Compositions

Size	Weight
10 x 20	0.9mm - 1.5mm
10 x 30	0.9mm - 1.5mm
10 x 40	0.9mm - 1.5mm
10 x 50	0.9mm - 1.5mm
12 x 25	0.9mm - 1.5mm
12 x 54	0.9mm - 1.5mm
14 x 80	0.9mm - 1.5mm
15 x 30	0.9mm - 1.5mm
20 x 40	0.9mm - 2mm
20 x 50	0.9mm - 2mm
35 x 85	2mm - 3mm
40 x 60	2mm - 3mm
40 x 80	2mm - 5mm
50 x 100	2mm - 5mm
50 x 150	2mm - 5mm
50 x 200	2mm - 5mm

Stainless Steel Bar Surface Finish

Through different processing methods of cold rolling and surface reprocessing after rolling, the surface finish of stainless steel bars can have different types.

The surface processing of stainless steel pipes have NO.1, 2B, No. 4, No. 3, No. 6, BA, TR hard, Rerolled bright 2H, polishing bright and other surface finishes, etc.

NO.1

Processing type: hot rolling, annealing, removing oxidized skin

State characteristics: rough, dark

Processing type: cold rolling, heat treatment, pickling or phosphorus removal

State characteristics: The surface is uniform, matte

Processing type: cold rolling, heat treatment, pickling or phosphorus removal, bright processing

State characteristics: The surface is smooth and straight compared with 2D

Processing type: cold rolling, bright annealing

State characteristics: smooth, bright, reflective

3 #

Type of processing: Brush film or matte finish on one or two sides

State characteristics: no direction texture, no reflection

4 #

Type of finishing: General finishing for single or double sides

State characteristics: no direction texture, reflective

6 #

Processing type: single or double matte satin line polishing, Tampico grinding

Condition characteristics: matte, no direction texture

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Process of Production

The production process of stainless steel pipe needs to go through: stapling → calendering → annealing → slicing → pipe making → polishing
1. Tape booking: Prepare raw materials of steel tape in advance according to demand
2. Calendering: Use calendering machine to press the roll plate like rolling noodles and roll the roll plate to the required thickness.
3, annealing: due to the rolling plate after calendering, physical properties can not reach the standard, toughness is not enough, need to annealing, restore stainless steel properties.
4. Strip: According to the outer diameter of the pipe produced, strip it
5. Pipe making: Put the divided steel strip into the pipe making machine with different pipe diameter molds for production, roll it into the corresponding shape, and then weld it
6. Polishing: After the pipe is formed, the surface is polished by the polishing machine.