Factory Price Sells Lightweight Thin-Walled ASTM A105 Square Hollow Section Carbon Steel Pipe

• 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 This product is a seamless steel pipe, meticulously crafted from various profiles through an advanced cold drawing process. Profile tubes are typically distinguished based on their cross-sectional shape. They can be categorized by material into seamless steel pipe profile tubes, aluminum alloy profile tubes, and plastic profile tubes.

Rectangular/Square Tube This is a hollow, square cross-section, lightweight thin-walled steel tube, renowned as steel cooling bending profiles. It is crafted using Q235 hot-rolled or cold-rolled steel strip or coil as the core material. Through a refined cold bending process followed by high-frequency welding, it achieves a precise square cross-sectional shape. The hot-rolled extra-thick walled square tube not only benefits from increased wall thickness but also boasts corner dimensions and edge straightness that meet or surpass the standards of resistance-welded cold-formed square tubes.
Classification of Rectangular/Square Tube:
This product is categorized into steel pipe seamless steel pipes and welded steel pipes (seamed pipes), including hot-rolled seamless square tubes, cold-drawn seamless square tubes, extruded seamless square tubes, and welded square tubes.
The welded square tube is sub-divided into:
1. Process-based categories: electric arc welding square tube, resistance welding square tube (covering high frequency and low frequency), gas welding square tube, and furnace welding square tube.
2. Seam-based categories: straight seam welded square tube and spiral welded square tube.

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 export packaging is meticulously designed for sea-worthiness, incorporating water-proof paper to ensure maximum protection.
2. Safe loading and securing are entrusted to our highly skilled professional teams, guaranteeing peace of mind.

Delivery Detail: Our commitment to timely service ensures delivery within 7-10 working days post deposit, or tailored to the specifics of your order quantity.

Company Profile

Wuxi Tongno Special Steel Co., Ltd. was founded in 2013 with a registered capital of 5 million yuan, proudly establishing itself as a professional seamless steel pipe manufacturing enterprise. Over the years, Wuxi Tongno Special Steel Co., Ltd. has experienced remarkable growth, now boasting three distinct seamless steel pipe production lines.

Wuxi Tongno Special Steel Co., Ltd. steadfastly adheres to its 'quality first, customer first' business philosophy. This dedication ensures our products meet high-precision standards, offering a wide range of wall thicknesses and accommodating small quantities across numerous varieties. We pride ourselves on our quick production pace, achieving sales at the forefront of the domestic market. Notably, we excel in producing small-diameter, medium-thick-walled, and large-calibre, thin-walled alloy seamless steel pipes at an advanced domestic level. Our products enjoy a stellar reputation both at home and abroad, making significant contributions to various project constructions by leveraging our unique manufacturing expertise and energy.

Our Advantages

1. Exceptional Service: We guarantee a response to all inquiries within an impressive 12-hour timeframe, ensuring your needs are met promptly and efficiently.

2. Certifications: We proudly showcase our prestigious ISO 9001, CE, and SGS certifications, reflecting our commitment to quality and excellence.

3. Cost-Effective Quality: Experience the perfect blend of competitive pricing and exceptional quality, thanks to our direct sourcing from our very own factory.

4. Robust Production Capacity: Our impressive monthly output of 20,000 tons stands testament to our capability to ensure uninterrupted and efficient production.

5. Flexible Payment Terms: We offer a wide range of flexible payment methods, including T/T and L/C, to suit your financial preferences.

6. Swift Delivery & Standard Export Packaging: Enjoy the benefits of rapid delivery coupled with packaging that meets stringent international export standards, ensuring safe transit.

7. Factory-Direct Advantage: Our self-owned factory empowers us to provide you with competitive pricing while maintaining superior quality standards.

8. Third-Party Testing: We openly welcome any third-party testing to validate and affirm the superior quality of our distinguished products.

9. Expert Team Support: Our professional sales team, paired with our dependable factory operations, ensures you receive unparalleled support and service.

10.Dedicated to Customization: Your specific requirements are not just accepted-they form the foundation of our service. Our commitment to fulfilling every tailored request is unwavering.

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.