Wholesale ASTM AISI 408 409 410 416 420 430 440 Stainless Steel Pipes Manufacturer and Supplier

ASTM AISI 408 409 410 416 420 430 440 Stainless Steel Pipes

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.

With more than 10 years steel exporting experience to more than 100 countries, we have gained great reputation and lots regular clients.

We will support you well along the whole process with our professional knowledge and prime quality goods.

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Type: Welded

Inspection: SGS, TUV, BV, Factory Inspection

Steel Grade: 201, 202, 204， 301, 302, 303, 304, 304L, 309, 310, 310S, 316, 316L, 321， 408, 409, 410, 416, 420, 430, 440， 630， 904, 904L， 2205，etc

Welding Line Type: ERW

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

Length: Customers' Requirements

Colors: Golden, Silver,Customzied

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.

Packing and Transportation

Packaging is generally naked, steel wire binding, very strong.

If you have special requirements, you can use rust proof packaging, and more beautiful.

Transportation: Express (Sample Delivery), Air, Rail, Land, Sea shipping (FCL or LCL or Bulk)

The first step in the delivery of stainless steel square tubes is to choose a reliable supplier. Look for suppliers with a reputation for delivering high-quality products on time and with a track record of meeting customer expectations. Check their delivery policies and make sure they offer flexible options to suit your needs.

Once you have selected a supplier, the delivery process begins. Suppliers will usually provide a delivery schedule based on your location, order size and any other relevant factors. This timeline should be clearly communicated to you so you can plan accordingly.

When stainless steel square pipes are ready to be shipped, they are usually wrapped with protective material to prevent damage during transportation. This may include plastic shrink wrap or cardboard sleeves. Some suppliers may also include additional cushioning material to ensure your product is not damaged during handling.

The shipping method for your Stainless Steel Square Tube delivery will depend on your location and the size of your order. For smaller orders, suppliers can use package delivery services such as UPS, FedEx or DHL. For larger orders, they may use a shipping company such as a trucking company or container service. The delivery company will provide a tracking number so you can monitor the progress of your order.

Once your stainless steel square pipes arrive, they must be inspected for any damage or defects. If any problems are found, the supplier should be notified immediately so they can correct the problem. It is important to remember that stainless steel is a highly durable material and any damage or defect could be the result of mishandling during shipping.