ASTM309 309S 309H S30900 S30908 S30909 Stainless Steel Pipe/Tube Welded Round Tube Thickness for Construction Cheap Price

• Customization: Available
• Type: Stainless Steel Pipes
• Standard: ASTM, AISI
• Model NO.: ASTM309 309S 309H S30900 S30908 S30909
• Certification: ISO
• Shape: Square
• Technique: Cold Rolled
• Surface Treatment: Polished
• Application: Construction/Indutry/Building/Chemical/Auto
• Processing Service: No.1/2b/Ba/No.4/8K/Sb/Hl/Embosses/Etched/Decorate
• Material: 200 Series/300 Series/400series
• Keyword: Welded Seamless Pipe Tube
• Transport Package: Standard Sea-Worthy Packing
• Specification: as required
• Trademark: bolaisheng
• Origin: China

Product Description

Stainless steel square tube is a hollow strip of steel with a square cross-section, making it uniquely identifiable as a square tube. Widely utilized for transporting fluids such as oil, natural gas, water, gas, and steam, it stands out due to its excellent bending and torsional strength combined with light weight. This distinctive feature makes it an ideal choice for manufacturing mechanical parts and engineering structures.
Stainless steel square pipe classification: Square pipes are categorized into two main types: seamless steel pipes and welded steel pipes (welded pipes). Based on the sectional shape, they can be divided into square and rectangular pipes, though round steel pipes are prevalent. Additionally, there are specialized shapes such as semicircular, hexagonal, equilateral triangle, and octagonal steel pipes to cater to diverse applications.
For stainless steel square pipes under fluid pressure, rigorous hydraulic tests are essential to assess their pressure resistance and quality. Pipes passing these tests exhibit no leakage, wetting, or expansion under specified pressures. Some pipes also undergo crimping, flaring, and flattening tests based on standards or specific customer demands to ensure top-notch reliability.
Square tube specification: 5*5~150*150mm Thickness: 0.4~6.0mm
Square pipe material: 304, 304L, TP304, TP316L, 316, 316L, 316Ti, 321, 347H, 310S

Product name	ASTM309 309S 309H S30900 S30908 S30909 Stainless Steel Square Tube
Grade	201,202,301,302,302HQ,303,304,304L,304F,309,310,310s,314,314l,316,316L,316Ti,316F,317,317l,321,409L,410,410S,416,420,420J1,420JS,430,430F,431,etc.
Standard	ASTM/ASMES A312 GR. TP304, 304L, 304H, 310S, 310H, 316, 316L, 347, 347H snd etc;ASTM/ASMES A358 CL1&CL3 GR. 304, 304L, 304H, 310S, 310H, 316, 316L, 347, 347H snd etc;Duplex ASTM / ASME SA 790 UNS NO S31803 , S32205 and etc.Inconel ASTM B444 UNS06625 , Incoloy ASTM B423 UNS08825 Hastelloy C276, Monel 400,ASTM B111 C68700, C44300, C70600, C71500,
Outside diameter	6mm-3000mm
W.T.	0.5-100mm
Length	1. Single Random Length and double Random Length.2. SRL: 3M-5.8M   DRL: 10-11.8M or As clients requested length3. Fixed length (5.8m, 6m, 12m)
Pipe Ends	Under 2 inch plain end. 2 inch and above Beveled. Plastic caps (small OD). Iron protector (large OD).
Surface Treatment	black paint, varnish, oil, galvanized, anti-corrosion coated.
Marking	Supply Logo + Standard + Size(mm) + HEAT NO +or as your requirement
Test	Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing , X-ray Test, HIC & SSC test, etc. or as your requirment
Brand	JIULI, WUJIN, ZHONGDA, GAOLIN, GANGYI, DEWEI, ZHANGYUAN etc or as your requirment
Certificates	API, ISO, SGS, BV, CE, PED, KOC, CCRC, PDO and etc.
Advantages	1. Abundant stock and prompt delivery2. Reasonable for whole packages and processes.3. 15 years' QC team service & sales management API& ASTM trained engineers.4. More than 150 customers spread worldwide. (Petrofac, G.S Engineer, Fluor, Hyundai  Heavy industry, Kuwait National Oil, Petrobras, PDVSA, PetroEcuador, SHELL, etc.)

Application area

Our Advantages

Qualitative Materials:

We source top-grade raw materials to ensure our products deliver superior strength, unmatched resilience, and lasting durability.

Advanced Technology:

Our manufacturing processes harness state-of-the-art technologies, including advanced smelting, continuous casting, and high-precision rolling.

Customized Service:

We provide bespoke design and manufacturing services, tailored to meet the unique specifications and requirements of our esteemed customers.

FAQ

Q1: Why choose your company?

A: With over 16 years of industry expertise and ownership of our factory, we offer unparalleled services, supported by a professional and dedicated sales team.

Q2: What are your terms of payment?

A: Our payment terms require a 30% T/T deposit upfront, with the remaining 70% due prior to delivery.

Q3: What are your delivery terms?

A: Our delivery terms include FOB, CFR, CIF, and EXW.

Q4: What is your delivery time?

A: Our standard lead time is between 7 to 15 days post receipt of the deposit.

Q5: Can you provide samples?

A: Yes, we provide free samples if they are available in stock. However, transportation fees are the responsibility of the buyer.

Certification