X2crnimocuwn25-7-4 X2crnimon29-7-2 1.4501 1.4477 Austenitic-Ferritic Stainless Steel Pipes/Tube with Bending Welding Cutting Service

• Customization: Available
• Type: Stainless Steel Pipes
• Standard: ASTM, AISI
• Model NO.: X2CrNiMoCuWN25-7-4 X2CrNiMoN29-7-2 1.4501 1.4477
• Grade: 300 Series
• 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

The stainless steel square tube is a hollow, square-shaped strip of steel, aptly named for its cross-sectional shape. These tubes are essential for transporting fluids such as oil, natural gas, water, gas, and steam. Their unique combination of bending and torsional strength, along with a lightweight profile, makes them indispensable in the manufacture of mechanical parts and engineering structures.
Stainless steel square pipes are categorized into two main types: seamless steel pipes and welded steel pipes (welded pipes). Depending on the cross-sectional shape, they can be square, rectangular, or other specialized forms such as semicircular, hexagonal, equilateral triangle, and octagonal. Although round steel pipes are the most widely used, these diverse shapes accommodate various specialized applications.
For stainless steel square pipes under fluid pressure, rigorous hydraulic tests are essential to ensure their pressure resistance and quality. A pipe is deemed qualified if it shows no leakage, moisture, or expansion under specified pressures. Additionally, these pipes may undergo crimping, flaring, and flattening tests as required by standards or customer specifications.
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	X2CrNiMoCuWN25-7-4 X2CrNiMoN29-7-2 1.4501 1.4477 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.)

Chemical Element Content (%)

X2CrNiMoCuWN 25-7-4 Chemical element content (%)
Element	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	W
Min	-	-	-	-	-	24	6	0.5	3	0.2	0.5
Max	0.03	1	1	0.035	0.015	26	8	1	4	0.3	1

X2CrNiMoCuWN 25-7-4 Physical properties
Static elastic modulus at each temperature °C				Thermal expansion coefficient between 20°C and various temperatures			Thermal conductivity	Specific heat	Resistivity	Magnetism
20°C	100°C	200°C	300°C	100°C	200°C	300°C	20°C	20°C	20°C
GPa				10-6 K-1			W/m.K	J/kg.K	Ω.mm2/m
200	194	186	180	13	13.5	14	15	500	0.8	Exist

X2CrNiMoN29-7-2 Chemical element content (%)
Element	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N
Min	-	-	0.8	-	-	28	5.8	-	1.5	0.3
Max	0.03	0.5	1.5	0.03	0.015	30	7.5	0.8	2.6	0.4

X2CrNiMoN29-7-2 Physical properties
Static elastic modulus at each temperature °C				Thermal expansion coefficient between 20°C and various temperatures			Thermal conductivity	Specific heat	Resistivity	Magnetism
20°C	100°C	200°C	300°C	100°C	200°C	300°C	20°C	20°C	20°C
GPa				10-6 K-1			W/m.K	J/kg.K	Ω.mm2/m
200	194	186	180	11.5	12	12.5	13	470	0.8	Exist

 

Application Area

Our Advantages

Qualitative Materials:

We utilize premium-grade raw materials to ensure our products deliver unmatched strength, durability, and longevity.

Advanced Technology:

Our manufacturing processes are enhanced with cutting-edge technologies, including advanced smelting, continuous casting, and rolling techniques.

Customized Service:

We provide bespoke design and manufacturing services tailored to meet specific customer needs and requirements.

FAQ

Q1: Why choose your company?

A: With over 16 years of industry expertise and our own factory, we deliver exceptional services supported by a professional and dedicated sales team.

Q2: What are your terms of payment?

A: We require a 30% T/T deposit upfront, with the remaining 70% payable before 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 7 to 15 days after receiving the deposit.

Q5: Can you provide samples?

A: Yes, we offer free samples if available in stock. However, the transportation fees must be borne by the buyer.

Certification