Custom Size Straight Seam Welded Rectangle Hollow Section Galvanized Steel Pipe ASTM A105

• 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 our profiled pipe, a seamless steel marvel crafted meticulously from various profiles by an advanced cold drawing process. This versatile profile tube is distinguished by its cross-sectional design and is available in several material variations, including seamless steel, robust aluminum alloy, and durable plastic profile tubes.

Rectangular/Square Tube Our Rectangular/Square Tube stands out as a hollow, square cross-section, lightweight, thin-walled steel marvel. Often referred to as steel cooling bending profiles, this product employs Q235 hot-rolled or cold-rolled steel strip as its core material. Through a refined cold bending process and high-frequency welding, it achieves a precise square cross-section. Exceptionally, our hot rolled extra thick walled square tubes not only feature enhanced wall thickness but also have corner dimensions and edge straightness that surpass the standards of resistance-welded cold-formed square tubes.
Classification of Rectangular/Square Tubes:
Our collection boasts a variety of options including seamless steel pipes and welded steel pipes (seamed pipes), with offerings such as hot-rolled seamless square tubes, cold-drawn seamless square tubes, extruded seamless square tubes, and welded square tubes.
Within our range of welded square tubes, they are further divided into:
1. Based on process type - our selection includes electric arc welded square tubes, resistance welded square tubes (both high frequency and low frequency), gas welded square tubes, and furnace welded square tubes;
2. Based on welding seam design - offering straight seam welded square tubes and spiral welded square tubes.

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 carefully packaged using export sea-worthy materials, complemented by waterproof paper, ensuring ultimate protection during transit.
2. Safe loading and secure fixing executed by our professional teams guarantee that your products will arrive in pristine condition.

Delivery Detail: Swift delivery within 7-10 working days after deposit confirmation, or tailored to suit your specific order quantity needs.

Company Profile

Wuxi Tongno Special Steel Co., Ltd. was established in 2013 with a registered capital of 5 million yuan. Dedicated to the professional production of seamless steel pipes, this enterprise has experienced a remarkable journey of rapid growth. Today, Wuxi Tongno Special Steel Co., Ltd. boasts three distinct seamless steel pipe production lines, positioning itself as a leader in the industry.

Embodying the core business philosophy of 'quality first, customer first,' Wuxi Tongno Special Steel Co., Ltd. guarantees products of exceptional precision and a vast array of wall thicknesses. Our offerings cater to small quantities with diverse varieties, ensuring a fast-paced production process that meets advanced domestic standards. We excel especially in the manufacture of small-diameter, medium-thick-walled, and large-caliber, thin-walled alloy seamless steel pipes, achieving excellence at the national level. Our products are celebrated both domestically and internationally, enhancing the quality of numerous construction projects with our expert manufacturing capabilities.

Our Advantages

1. Exceptional Service: We guarantee timely responses to all inquiries, ensuring you hear from us within an impressive 12-hour window.

2. Certifications: Proudly holding prestigious ISO 9001, CE, and SGS certifications, assuring you of our unwavering commitment to quality and excellence.

3. Cost-Effective Quality: Take advantage of our competitive pricing and superior quality, with products directly sourced from our state-of-the-art factory.

4. Robust Production Capacity: Our production prowess is evident with a substantial monthly output of 20,000 tons, guaranteeing a steady and reliable supply.

5. Flexible Payment Terms: We offer a variety of payment options to suit your needs, including T/T and L/C, for your convenience.

6. Swift Delivery & Standard Export Packaging: Experience the assurance of rapid delivery and exceptional packaging that meets international export standards, safeguarding your products.

7. Factory-Direct Advantage: Our exclusive factory operations allow us to provide competitive pricing while upholding our high quality standards.

8. Third-Party Testing: We openly welcome any third-party testing to confirm the superior quality of our products, offering you additional peace of mind.

9. Expert Team Support: Supported by our expert sales team and a dependable factory, ready to assist you every step of the way.

10.Dedicated to Customization: Your unique specifications are not just welcomed-they form the core of our service. We take pride in fulfilling every customized request with precision.

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.