Durable Hot-Rolled Galvanized Steel Pipe Square Hollow Section for Construction Material

• Customization: Available
• After-sales Service: 24h Online
• Type: Seamless/Welded
• Model NO.: ASTM: A105, A106, A106B, A106C, A178, A179, A192,
• Technique: Hot/Cold Rolled,Cold Draw,ERW,Saw,Efw,Extrude
• Material: Carbon,Stainless,Alloy
• Surface Treatment: Black/Varnishing/Polished/Oiled/Galvanized
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Rectangular
• Payment: T/T,L/C,etc.
• Certificate: CCS, ABS, BV API, ISO9001
• Thickness: Customizable
• Length: Customizable
• Width: Customizable
• Delivery: at Stock or 7-15 Days According to The Quantity
• MOQ: Low MOQ
• Quality Control: 100% Inspection
• Secondary or Not: Non-Secondary
• Sample: Provide
• Standard and Grade-01: ASTM: A105, A106, A106b, A106c,
• Standard and Grade-02: SAE1018, SAE1020, SAE1045,etc
• Standard and Grade-03: 16mn, 50mn, Q195, Q215, Q235
• Technique-01: Hot Rolled, Cold Drawn, Forging, Seamless, Welded
• Transport Package: Neutral Standard Export Seaworthy Packing
• Specification: As requirement
• Trademark: Tongno
• Origin: Wuxi China
• Production Capacity: 200, 000 Ton/Year

Product Description

Product Description

Profiled Pipe Introducing the profiled pipe, a masterclass in engineering excellence! This seamless steel marvel is crafted through meticulous cold drawing, transforming various profiles into a robust conduit. With its cross-sectional versatility, the profile tube elegantly divides based on its structure. Depending on the material, it branches into categories such as the resilient seamless steel pipe, the lightweight aluminum alloy profile tube, and the adaptable plastic profile tube. Each type offers a unique blend of strength and functionality.

Rectangular/Square Tube Meet the rectangular/square tube, a pinnacle of modern construction solutions! Renowned for its hollow square cross-section, this lightweight and thin-walled steel tube-colloquially known as steel cooling bending profiles-is engineered with precision. Utilizing Q235 hot-rolled or cold-rolled steel strip or coil as a foundation, it undergoes an innovative cold bending process followed by high-frequency welding, resulting in a perfect square cross-section steel marvel. The hot-rolled extra-thick-walled square tube not only boasts enhanced wall thickness but also achieves superior corner dimensions and unparalleled edge straightness, often surpassing the stringent standards of resistance welding cold-formed square tubes.
Classification of Rectangular/Square Tube:
Discover the diverse classifications of rectangular/square tubes: from the seamless steel pipes to the welded variants (seamed pipes), including hot-rolled seamless square tubes, cold-drawn seamless square tubes, extruded seamless square tubes, and the versatile welded square tubes. Each type offers its own set of advantages, catering to a wide range of industrial needs.
The Welded Square Tube Variants:
1. Explore the process-based categories: Select from electric arc welding square tubes, resistance welding square tubes (both high frequency and low frequency), gas welding square tubes, and the classic furnace welding square tubes. Each variant is designed to meet specific requirements and enhance structural integrity.
2. Delve into the welding seam options: Choose between straight seam welded square tubes and the innovative spiral welded square tubes, each offering unique structural benefits and applications.

Product Name	Profiled Tubes
Standard	ASTM: A105, A106, A106B, A106C, A178, A179, A192, A210, A519, A53, A53A, A53B,API5L,etc
	ASME: B36.19, B36.10,etc
	SAE1018, SAE1020, SAE1045,etc
	JIS: S20C, S25C, S35C, S45C, S55C,etc
	DIN: C35, CK35, C45, CK45, etc
	GB/T: 10#, 20#, 35#, 45#, 55#, etc
Material	16Mn, 50Mn, 20Cr, 40Cr, 15CrMo, 20CrMo, 30CrMo, 35CrMo, 42CrMo, SS400,etc
	C35/CK35, C45/CK45, etc
	SAE1018, SAE1020, SAE1045,etc
	St37, St52, etc
	Q195, Q215, Q235, Q275,Q295,Q345,Q355,Q390,etc
	S235(JR,J0,J2),S275(JR,J0,J2),S355(JR,J0,J2),S420(N,ML),S460(M,ML)
Square Pipe Size	16×16×0.4~1.5 ; 18×18×0.4~1.5 ; 20×20×0.4~1.5 ; 25×25×0.6~2.0 ; 30×30×0.6~4.0 ; 34×34×1.0~2.0 ; 35×35×1.0~4.0 ; 38×38×1.0~4.0 ; 40×40×1.0~4.5 ; 44×44×1.0~4.5 ; 45×45×1.0~5.0 ; 50×50×1.0~5.0 ; 60×60×1.5~5.0 ; 70×70×2.0~6.0 ; 75×75×2.0~6.0 ; 80×80×2.0~6.0 ; 85×85×2.0~6.0 ; 95×95×2.0~8.0 ; 100×100×2.0~8.0 ; 120×120×4.0~8.0 ; 150×150×6.0~10.0 ; 180×180×6.0~12.0 ; 200×200×6.0~30.0 ; 220×220×6.0~30.0 ; 250×250×6.0~30.0 ; 280×280×6.0~30.0 ; 300×300×8.0~30.0 ; 320×320×8.0~30.0 ; 350×350×8.0~30.0 ; 380×380×8.0~30.0 ; 400×400×8.0~30.0 ; 420×420×10.0~30.0 ; 450×450×10.0~30.0 ; 480×480×10.0~30.0 ; 500×500×10.0~30.0
Rectangular Tube Size	10×20×0.6~1.5 ; 14×21×0.6~1.5 ; 15×30×1.5~1.5 ; 15×38×0.6~1.5 ; 20×30×0.6~2.0 ; 20×40×0.8~2.0 ; 20×50×1.0~2.0 ; 22×35×0.9~2.0 ; 25×40×0.9~3.75 ; 25×65×1.0~2.0 ; 30×40×1.0~3.75 ; 30×45×1.0~3.75 ; 30×50×1.0~4.0 ; 30×60×1.0~4.5 ; 40×50×1.0~4.5 ; 40×60×1.0~5.0 ; 40×80×1.5~5.0 ; 40×100×2.0~5.0 ; 50×60×2.0~5.0 ; 50×80×2.0~5.0 ; 50×100×2.0~8.0 ; 60×80×2.0~6.0 ; 80×100×2.0~8.0 ; 120×60×2.5~10.0 ; 120×80×2.5~10.0 ; 150×100×2.5~12.0 ; 180×150×2.5~12.0 ; 200×100×4~12.0 ; 200×150×4~12.0 ; 250×150×6~12.0 ; 250×100×6~12.0 ; 250×200×6~30.0 ; 300×150×6~30.0 ; 300×200×6~30.0 ; 300×250×6~30.0 ; 400×250×8~30.0 ; 400×300×8~30.0 ; 450×200×8~30.0 ; 450×250×8~30.0 ; 400×300×8~30.0 ; 400×350×8~30.0 ; 500×200×10~30.0 ; 500×250×10~30.0 ; 500×300×10~30.0 ; 500×350×10~30.0 ; 500×400×10~30.0 ; 500×450×10~30.0
Technique	Hot Rolled, Cold Drawn, Forging, Seamless or Welded
Pipe Ends	1) Plain  2) Beveled  3) Threaded with coupling and plastic cap
Deep Processing	Oiled, Painted, Galvanized, Powder Coating, Shrink Head, Pressure Groove, Welding Head, Punching, Threaded With Coupling and Plastic Cap
Package	Standard sea-worthy package or as required

Chemical Composition:

Grade		Chemical Composition
		C Max	Mn	SI Max	P Max	S Max	V	Nb	Ti	Al Min	Cr Max	Ni Max
Q295	A	0.16	0.80-0.15	0.55	0.045	0.045	0.02-0.15	0.015-0.060	0.02-0.20	-
	B	0.16	0.80-0.15	0.55	0.04	0.04	0.02-0.15	0.015-0.060	0.02-0.20	-
Q345	A	0.2	1.00-1.6o	0.55	0.045	0.045	0.02-0.15	0.015-0.060	0.02-0.20	-
	B	0.2	1.00-1.60	0.55	0.04	0.04	0.02-0.15	0.015-0.060	0.02-0.20	-
	c	0.2	1.00-1.60	0.55	0.035	0.035	0.02-0.15	0.015-0.060	0.02-0.20	0.015
	D	0.18	1.00-1.60	0.55	0.03	0.03	0.02-0.15	0.015-0.060	0.02-0.20	0.015
	E	0.18	1.00-1.60	0.55	0.025	0.025	0.02-0.15	0.015-0.060	0.02-0.20	0.015
Q390	A	0.2	1.00-1.60	0.55	0.045	0.045	0.02-0.20	0.015-0.060	0.02-0.20	-	0.3	0.7
	B	0.2	1.00-1.60	0.55	0.04	0.04	0.02-0.20	0.015-0.060	0.02-0.20	-	0.3	0.7
	c	0.2	1.00-1.60	0.55	0.035	0.035	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.3	0.7
	D	0.2	1.00-1.60	0.55	0.03	0.03	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.3	0.7
	E	0.2	1.00-1.60	0.55	0.025	0.025	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.3	0.7
Q420	A	0.2	1.00-1.70	0.55	0.045	0.045	0.02-0.20	0.015-0.060	0.02-0.20	-	0.4	0.7
	B	0.2	1.00-1.70	0.55	0.04	0.04	0.o2-0.20	0.015-0.060	0.02-0.20	-	0.4	0.7
	c	0.2	1.00-1.70	0.55	0.035	0.035	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.4	0.7
	D	0.2	1.00-1.70	0.55	0.03	0.03	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.4	0.7
	E	0.2	1.00-1.70	0.55	0.025	0.025	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.4	0.7
Q460	A	0.2	1.00-1.70	0.55	0.035	0.035	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.7	0.7
	B	0.2	1.00-1.70	0.55	0.03	0.03	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.7	0.7
	C	0.2	1.00-1.70	0.55	0.025	0.025	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.7	0.7

Detailed Photos

 

Certifications

Packaging & Shipping

1.Our products are expertly encased in export-ready packaging, bolstered with waterproof paper, ensuring they reach you in pristine condition.
2. Safe loading and fixing by professional teams, assuring secure and reliable transit every step of the way.

Delivery Detail: Swift delivery assured! We ensure dispatch within 7-10 working days post-deposit receipt, tailored precisely to your order quantity.

Company Profile

Wuxi Tongno Special Steel Co., Ltd. was established in 2013, with a registered capital of 5 million yuan. As a leading enterprise in the professional production of seamless steel pipes, Wuxi Tongno Special Steel Co., Ltd. has experienced rapid growth and now proudly operates three specialized seamless steel pipe production lines.

Wuxi Tongno Special Steel Co., Ltd. is steadfast in its commitment to the 'quality first, customer first' business philosophy. We guarantee high-precision products featuring a vast range of wall thicknesses and accommodating small orders across numerous varieties. Our production pace and sales are on par with domestic industry leaders, particularly excelling in the production of small-diameter medium-thick-walled and large-caliber thin-walled alloy seamless steel pipes. Both domestically and internationally, our products are celebrated for their quality and reliability, supporting a variety of construction projects and showcasing our manufacturing prowess.

Our Advantages

1. Exceptional Service: We are dedicated to providing exceptional service with a promise to respond to all inquiries within an impressive timeframe of just 12 hours.

2. Certifications: We take immense pride in our prestigious ISO 9001, CE, and SGS certifications, reflecting our commitment to quality and excellence.

3. Cost - Effective Quality: Enjoy the synergy of competitive prices blended with exceptional quality, as our products come directly from our own factory, ensuring no middleman costs.

4. Robust Production Capacity: Our impressive monthly output of 20,000 tons highlights our robust production capabilities, guaranteeing a seamless and reliable supply chain.

5. Flexible Payment Terms: We offer flexible payment options, accepting various methods such as T/T and L/C to facilitate smooth transactions.

6. Swift Delivery & Standard Export Packaging: Experience the assurance of swift delivery, with our products meticulously packaged to meet and exceed international export standards.

7. Factory - Direct Advantage: Leverage our factory-direct advantage to enjoy competitive pricing, with no compromise on the superior quality of our products.

8. Third - Party Testing: We enthusiastically welcome third-party testing to affirm the outstanding quality and reliability of our products.

9. Expert Team Support: Our operations are fortified by a seasoned sales team and a dependable factory, ensuring expert support at all times.

10.Dedicated to Customization: Your unique specifications are not only welcomed-they form the essence of our service. We pledge to fulfill every customized request with precision and care.

FAQ

Q1: What are your primary product offerings?

A1: We are a leading manufacturer and supplier of high-quality steel products, specializing in:
Stainless Steel & Carbon Steel: Sheets/plates, coils, and pipes/tubes (both seamless and welded)
Structural Components: Various bar profiles (round, square, hexagonal, flat, angle), C-channels, and H/I-beams
Custom Fabrications: Tailored solutions to meet specific project requirements

Q2: What quality assurance measures do you have in place?

A2: We maintain stringent quality control through:
Comprehensive Mill Test Certificates provided with all shipments
Optional third-party inspection services (SGS, BV, etc.)
ISO-certified manufacturing processes
Rigorous in-house testing and quality checks

Q3: What are your standard packaging terms?

A3: Our standard packaging includes:
Bundled or coiled goods secured with steel rods/straps
Custom packaging solutions available per customer specifications
Export-grade packaging to ensure optimal protection during transit

Q4: What is your typical delivery timeline?

A4: We offer flexible delivery options:
Stock items: Ready for shipment within 3 business days after deposit confirmation
Made-to-order items: Production typically completed within 7-15 working days post-deposit
Expedited options available for urgent requirements

Q5: What competitive advantages does your company offer?

A5: We differentiate ourselves through:
A team of highly skilled professionals and technical experts
Industry-leading pricing without compromising quality
Unparalleled after-sales support and customer service
Extensive inventory and reliable supply chain management

Q6: Do you provide product samples?

A6: Yes, we're pleased to offer:
Complimentary small samples from existing inventory
Customer only responsible for shipping costs
Custom samples available for specific project needs

Q7: What are your payment terms?

A7: Our standard payment structure:
30% advance payment via T/T to initiate production/order
Remaining 70% balance due prior to shipment
Full documentation including product photos and packaging details provided before final payment

Why Choose Us?

√ Quality Assurance: Rigorous testing and certification
√Competitive Pricing: Cost-effective solutions without compromise
√ Reliable Delivery: On-time fulfillment guaranteed
√ Custom Solutions: Tailored to your exact specifications
√ Expert Support: Technical guidance at every stage
For further inquiries or specific requirements, please contact our sales team. We're committed to providing exceptional service and top-quality steel products for your projects.