Stainless Steel Square & Rectangular Tubes

Product Overview
Stainless Steel Square & Rectangular Tubes are a key product category of our welded tube manufacturing line. Made from food-grade and industrial-grade stainless steel materials, these Stainless Steel Welded Tubes are produced through automatic TIG welding and precision forming processes. Available grades include TP304/304L, TP316/316L, and UNS S32205 (Duplex 2205), complying with ASTM A269, ASTM A312, and ASTM A249 standards.
We supply Stainless Steel Square & Rectangular Tubes in square, rectangular, and customized profiles, with options including BA bright annealed tubes, straight welded tubes, and special-shaped tubes. Surface finishes include bright, pickled, and brushed finishes to meet different fabrication and structural requirements.

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Specifications

Application Scenarios
Stainless Steel Square & Rectangular Tubes are widely used in:
Architectural applications including curtain walls, decoration projects, and structural frames
Mechanical equipment frames and precision components
Industrial equipment and supporting structures
Mold cooling systems and customized machinery parts
Fluid transportation systems requiring corrosion-resistant stainless steel tubing

Product Features and Advantages
Available in TP304/304L, TP316/316L, and UNS S32205 (Duplex 2205) stainless steel grades for different application requirements
Manufactured with automatic TIG welding technology for stable quality and accurate dimensions
Supports square, rectangular, and special-shaped tube customization
Provides flexible surface finish options including bright, pickled, and brushed finishes
Offers precise angles and stable forming performance for structural applications
Certified with ISO 9001 and ISO 14001 quality management systems
Products meet ASTM A269, ASTM A312, ASTM A249, and GB/T standards

Why Choose This Product
Customers choose our Stainless Steel Square & Rectangular Tubes for:
Stable factory supply with reliable production capability
Customized profiles, dimensions, and wall thickness to meet project requirements
Flexible solutions for standard and non-standard tube projects
Small-batch trial production support for new applications
Quality-controlled products based on international manufacturing standards

Who We Serve
We serve these customers:
Stainless steel tube distributors and wholesalers
Mechanical equipment manufacturers
Construction material suppliers
OEM equipment companies
Engineering contractors
Industrial component purchasers
These Stainless Steel Square & Rectangular Tubes are designed for B2B buyers requiring customized stainless steel welded tubes, stable supply, and reliable manufacturing support.

Why Choose Us
We are a professional manufacturer specializing in Stainless Steel Welded Tubes with our own factory and production lines. Our manufacturing capability covers stainless steel material selection, tube forming, welding, surface treatment, customization, and final inspection.
We provide OEM/ODM support and flexible production services for global customers. Standard customized orders usually require 25–45 working days for small-batch production and 45–60 working days for large-volume orders, depending on specifications and raw material availability.

OEM / ODM Service
We provide OEM and ODM services for customized Stainless Steel Square & Rectangular Tubes according to customer drawings and technical requirements.
Customization options include:
Stainless steel grade selection
Outer diameter and wall thickness
Square, rectangular, and special-shaped profiles
Inner tooth / outer fin structures
Surface finishes
Fixed length requirements
Custom non-standard tube orders normally start from 50–100kg. Sample production is available for new projects with small quantities.
Payment terms: T/T, 30% deposit and 70% balance before shipment. Long-term customers can discuss alternative payment arrangements.

FAQ
Q1: What stainless steel grades are available for Stainless Steel Square & Rectangular Tubes?
We supply TP304/304L, TP316/316L, and UNS S32205 (Duplex 2205) stainless steel grades.
Q2: What standards do your Stainless Steel Welded Tubes meet?
Our products comply with ASTM A269, ASTM A312, ASTM A249, and GB/T standards.
Q3: Can you produce customized Stainless Steel Square & Rectangular Tubes?
Yes. We provide OEM/ODM services for dimensions, profiles, structures, surface finishes, and lengths.
Q4: What is the minimum order quantity for customized tubes?
Custom non-standard orders usually start from 50–100kg. Small quantity samples are available for new projects.
Q5: How long is the production time?
Small-batch production usually takes 25–45 working days, while large customized orders take about 45–60 working days.

warehouse address	No. 3, Fuqiao Road, Caoqiao Town, Xinyi City, Xuzhou City, Jiangsu Province	brand	other
Wall thickness	For more details, please inquire.	Item number	Titanium square and rectangular tube
Material	Stainless steel titanium	Applications	Petrochemicals, seawater desalination, aerospace, food and pharmaceuticals, nuclear power, printing and dyeing, environmental protection, etc.
Place of origin	Jiangsu	Imported	no
Applicable media	Water, oil, gas, machinery, equipment, machining, mining	Processing technology	Welding, drilling, punching, laser cutting, slitting

Specification	Inner diameter	thickness	Outer diameter	Weight (g)
Titanium square and rectangular tube	custom made	1	custom made	10

About Us

Kunshan Decent Metal Products Co., Ltd.

Kunshan Decent Metal Products Co., Ltd. Was Founded in 2010 and located in Kunshan, Jiangsu Province. We are a professional manufacturer specializing in high-performance welded tubes. Our product range covers stainless steel welded tubes, titanium welded tubes, nickel-based alloy tubes, and other special alloy pipes.
With over 10 years of industry experience, we have built a large-scale production base covering more than 40 acres. Our facility is equipped with 20 automatic argon arc welding lines, including 3 high-precision automatic ion welding lines, supporting a full range of specifications from φ6–189mm in outer diameter and 0.3–5.0mm in wall thickness.
We maintain strict quality control with complete testing equipment, including German-imported direct-reading spectrometers, UT/ET flaw detectors, hydrostatic testing machines, metallographic microscopes, and Vickers hardness testers. Our products comply with GB/T12770, GB/T1277, GB/T3625, GB/T24593, ASTM2554, JIS and other international standards, and are widely used in petrochemical, desalination, marine engineering, aerospace, nuclear power, medical equipment, HVAC, and other demanding industries.
Backed by a professional team of over 100 employees, including more than 20 dedicated R&D engineers, we hold ISO9001, ISO14001 certifications and a pressure pipeline license. We adhere to the principle of "Quality First, Customer Supreme", providing reliable, customized solutions and professional services to global clients.