Factory Price Sells Straight Seam Welded Square Hollow Section Galvanized 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 Our Profiled Pipe is a masterful creation of seamless steel, meticulously crafted through a sophisticated cold drawing process. This innovative profile tube is elegantly classified by its distinguished cross-section. Depending on the material, it can be categorized into seamless steel pipe profile tubes, sleek aluminum alloy profile tubes, and versatile plastic profile tubes, each designed to meet diverse needs.

Rectangular/Square Tube The Rectangular/Square Tube offers an exceptional hollow square cross-section and is a marvel of lightweight, thin-walled steel engineering. Commonly referred to as steel cooling bending profiles, this sophisticated product originates from Q235 hot-rolled or cold-rolled steel strips or coils. Through an advanced cold bending process followed by high-frequency welding, it achieves its precisely square cross-section size. Our hot-rolled extra thick-walled square tubes go beyond with enhanced wall thickness, refined corner dimensions, and remarkable edge straightness, often surpassing the standards of resistance-welded and cold-formed square tubes.
Classification of Rectangular/Square Tube:
We present a diverse array of seamless and welded options for Rectangular/Square Tubes: hot-rolled seamless square tubes, cold-drawn seamless square tubes, extruded seamless square tubes, and welded square tubes (commonly known as seamed pipes).
Welded Square Tube Varieties Include the Following:
1. By Process: Choose from electric arc welding square tubes, resistance welding square tubes (available in high frequency and low frequency), gas welding square tubes, and furnace welding square tubes, each offering unique benefits.
2. By Welding Seam: Options include straight seam welded square tubes and spiral welded square tubes, tailored to your specific structural requirements.

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.Securely export with sea-worthy packaging enhanced by water-resistant paper for ultimate protection.
2. Safe loading and fixing ensured by our expert, professional teams.

Delivery Detail: Swift delivery within 7-10 working days post-deposit, tailored to your order quantity for seamless satisfaction.

Company Profile

Wuxi Tongno Special Steel Co., Ltd. was established in 2013 with an impressive registered capital of 5 million yuan. Dedicated to the professional manufacturing of seamless steel pipes, Wuxi Tongno Special Steel Co., Ltd. has undergone remarkable growth, showcasing its prowess through three distinct and state-of-the-art seamless steel pipe production lines.

Embodying the core values of 'quality first, customer first,' Wuxi Tongno Special Steel Co., Ltd. is committed to delivering products of unparalleled precision. Our offerings are characterized by their wide range of wall thicknesses and the capability to fulfill small quantity needs across diverse varieties, all while ensuring rapid production. Our domestic sales are at the forefront of the industry, particularly excelling in the production of small-diameter, medium-thick-walled, and large-caliber, thin-walled alloy seamless steel pipes. Domestically acclaimed and internationally recognized, our products are celebrated for their contribution to numerous construction projects, reflecting our manufacturing expertise.

Our Advantages

1. Exceptional Service: We guarantee a lightning-fast response to all inquiries within 12 hours, ensuring you're never left waiting.

2. Certifications: We proudly uphold a suite of prestigious certifications, including ISO 9001, CE, and SGS, exemplifying our unmatched commitment to quality.

3. Cost-Effective Quality: Experience the perfect blend of competitive pricing and premium quality. Our products are sourced directly from our own factory, eliminating middlemen and ensuring exceptional value.

4. Robust Production Capacity: With a formidable production capacity of 20,000 tons monthly, we guarantee seamless operations that meet your demands with ease.

5. Flexible Payment Terms: We offer an array of payment options, including T/T and L/C, to provide remarkable flexibility and convenience.

6. Swift Delivery & Standard Export Packaging: Anticipate rapid delivery and meticulously packaged products that adhere to international export standards, ensuring safe and secure transit.

7. Factory-Direct Advantage: Operating our own factory allows us to offer competitive prices without sacrificing quality, providing you with unmatched value.

8. Third-Party Testing: We welcome third-party testing with open arms, as it reinforces our unwavering dedication to product quality and customer satisfaction.

9. Expert Team Support: Our professional sales team and trustworthy factory are the backbone of our operations, ensuring you receive top-tier support every step of the way.

10.Dedicated to Customization: Your unique specifications are more than accepted-they are the foundation of our service. We are passionately committed to fulfilling every customized request to your satisfaction.

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.