  +86 13812027444       lee@hongguansteel.com
347 Stainless Steel Square Pipe/Tube
Home » Products(1) » Stainless steel products » Stainless Steel Pipe/Tube » Stainless Steel Square Tube » 347 Stainless Steel Square Pipe/Tube

Product Category

Leave a Message
Get Relpy Now


347 Stainless Steel Square Pipe/Tube

Material Grade: 347
Type: Ferritic, Austenite, Martensite, Duplex
Technology: Cold Rolled and Hot Rolled
Size: According to the customer's requests
Certifications: ISO 9001,SGS,BV
Payment: TT, LC, Western Union.
Service: Third party testing
Delivery: Within 7-15 days or considering the quantity
  • As customers' demands

  • Hongguan

347 Stainless Steel Square Pipe/Tube Manufacturer

347 is similar to 321 stainless steel, which is often used as a stable alternative to type 304. However, in the case of 347, the stabilizer is niobium. This metal strengthens 347's already present ability to withstand intergranular corrosion to its maximum capacity. In addition, niobium allows 347 to be heated repeatedly at temperatures up to 1650°F. As a result, this metal is commonly used in high-temperature equipment such as gaskets and expansion joints, as well as in rocket engines and chemical manufacturing.

In addition to its heat resistance, 347 enjoys better resistance to creep and stress fracture corrosion. This is another advantage of Type 304, as the characteristics of Type 347 may be more suitable for environments where stability is a major concern.

Type 347 is known to be machinable by all common welding techniques, along with hot and cold working. However, when being heat treated, the metal must be heated in the 2100 to 2250°F range. This is due to the fact that 347 cannot be work hardened under heat treatment. Cold reduction is the only way to take advantage of the high temperature properties of this alloy.

347 Stainless Steel Square Pipe/Tube Description

Product Name

347 Stainless Steel Square Pipe


Round tubes, Square tubes, rectangular tubes


As required

Outer diameter

Round tube: 8mm to 680 mm

Square tube: 10x10mm to 300x300mm

Rectangular tube: 10x20mm to 120x180mm


Hot   rolled / cold rolled



Surface   Treatment



201,   202, 301, 302, 303, 304, 304L, 304H, 310S, 316, 316L, 317L, 321,310S 309S,   410, 410S,420, 430, 431, 440A,904L


Decoration,   Construction, Upholstery, Water supplying, handrail, railing, staircase,   door, window, balcony, fence, bench, furniture etc

Shipment time

Within 7-15   workdays after receiving deposit or L/C

Export packing

Standard Export Seaworthy Package.Suit for all kinds of   transport,or as require

347 Stainless Steel Square Pipe Surface

347 stainless steel pipe surface

347 Stainless Steel Tube Square Production

stainless steel square production (1)

About US

Honggang steel is an ISO certified China 347 stainless square steel pipe exporter. Our 347 stainless steel square pipe/tube is tested to international standards and specifications by DIN, JIS, EN, ASTM, etc. As a distributor and dealer of 347 stainless steel square tubes in your country/region, we are a trustworthy supplier. We have a large inventory in Asia, GCC, Gulf, the Middle East, UK, supplying more than 38 countries, and we provide various services as follows.

  1. Support third-party inspection

  2. Customized processing stainless steel one-stop sourcing

  3. Provide free samples

  4. Provide a full range of stainless steel customization

  5. 24 hours online, able to reply on time

Thank you for visiting Honggang steel. Please send us an email to start our first cooperation. For more details of each item, please contact our sales for information.


stainless steel Certificates (1)

347 Stainless Steel Square Tube Chemical Composition

Ni9   – 13
Cr17   – 19
C0.08   max
Mo3   – 4
Mn2   max
Si0.75   max
S0.03   max
P0.045   max
Co + Ta10xC   min
1.00 max

The chemical composition and mechanical properties provided are general approximations. Please contact our customer service department for material test reports.

347 Stainless Steel Square Tube Mechanical Properties

GradeTensile   Strength (MPa) minYield   Strength 0.2% Proof (MPa) minElongation   (% in 50mm) minHardness
Rockwell B (HR B) maxBrinell   (HB) max

The chemical composition and mechanical properties provided are general approximations. Please contact our customer service department for material test reports.

Product Inquiry

Quick Links

Email: lee@hongguansteel.com
Tell: 0086-13812027444
WhatsApp: 0086-13812027444
Address: Room 413, Building No.7, A4, Huarun Landmark Plaza, Maoling Mountain Road No.2, Lixia District, the City of Jinan
Copyright © 2021 Shandong Hongguan Steel Group Co., Ltd. All Rights Reserved.Support By Leadong.