GB Ss 304 90mm Diameter Seamless ERW Hot Rolled Black Hollow Welded Stainless Carbon ERW Smls Pipe

Product Description

Product Description

Stainless Steel Pipes Introduction

Our stainless steel pipes, featuring precise forming technology, excellent corrosion resistance, and stable structural strength, serve as a core adaptive material for high-end manufacturing, fluid transportation, and other fields. Capable of meeting diverse working condition requirements, we provide global customers with both standardized mass-produced and customized exclusive solutions.

Core Product Categories & Specifications

We mainly cover three mainstream material grades, tailored to different application scenarios:

304 Stainless Steel Pipes: A versatile general-purpose grade with excellent corrosion resistance and machinability, suitable for conventional fluid transportation and structural support scenarios.

316L Stainless Steel Pipes: Boasting enhanced corrosion and high-temperature resistance, these pipes can withstand acid-alkali, humid, and high-temperature working conditions, making them ideal for harsh environments such as chemical engineering and marine engineering.

201 Stainless Steel Pipes: A cost-effective option that meets basic anti-rust requirements and budget control needs, applicable to general structural component scenarios.

Our product range includes two major series: precision seamless pipes and welded pipes. The outer diameter can be customized, with surface treatment options including pickling, passivation, and polishing. We also provide value-added deep processing services such as cutting, chamfering, and pipe bending, to precisely match customers' practical application parameters.

Core Product Advantages

Premium Raw Materials & Precise Dimensions: Manufactured from high-purity raw materials, our pipes feature uniform wall thickness and precise inner diameter, with dimensional tolerances strictly complying with international standards. Free from defects like blowholes and cracks, the pipes ensure consistent quality.

Stable Mechanical Performance: With excellent tensile, compressive, and impact resistance, the pipes can withstand long-term loads under complex working conditions, delivering reliable performance throughout their service life.

Outstanding Corrosion & Oxidation Resistance: Highly resistant to rust and deformation, our stainless steel pipes have a significantly longer service life compared to ordinary steel pipes.

Strong Processing Adaptability: The pipes are compatible with stable operation of processes such as welding, splicing, and bending, ensuring low material loss and excellent forming results, while balancing practicality and durability.

Main Application Fields

Our products are widely applied in core scenarios across multiple industries:

Chemical Industry: Acid-alkali medium transportation pipelines, reactor connecting pipes.

New Energy Industry: Fluid pipes for energy storage equipment, pipe fittings supporting photovoltaic and wind power systems.

Automotive Industry: Exhaust emission pipes, cooling system pipe fittings.

Water Supply & Drainage Industry: High-end building water supply pipelines, sewage treatment pipelines.

Mechanical Equipment Industry: Hydraulic pipes for precision equipment, corrosion-resistant accessories.

Food & Pharmaceutical Industry: Sanitary-grade transportation pipelines.

Rigorous Quality Assurance

We have established a closed-loop full-process quality control system:

Raw Material Inspection: Strict analysis and testing are conducted upon raw material arrival to prevent non-conforming materials from entering the production line.

In-process Monitoring: Real-time monitoring of key process parameters such as rolling, welding, and forming is carried out during production, with simultaneous online flaw detection to promptly correct process deviations.

Finished Product Testing: Comprehensive inspections including hydrostatic testing, air tightness testing, corrosion resistance testing, and dimensional accuracy review are performed on finished products. Each batch of products is accompanied by a complete inspection report.

Protective Packaging: Protective packaging is adopted to avoid collision damage and corrosion during transportation, ensuring stable and reliable delivery quality.

We offer customized solutions for materials, specifications, surface treatment, and deep processing as required. Leveraging convenient port and logistics advantages, we achieve fast delivery of global orders. With quality as our core and customer needs as our guide, we sincerely invite customers from all industries to cooperate with us and build an efficient and durable stainless steel pipe application system.

Product Specifications

Outer Diameter: 6–630mm

Wall Thickness: 0.3–80mm

Precision Pipe Tolerance: 0.05mm

Product Materials: TP304/304L/304H, TP316/316L/316H/316TL, TP321, 310S/H, 317L, 347, S31803, S32205, S32750, S32760, N8904 (904L)

Executive Standards: GB, HG, SH, JB, ASTM, ASME, JIS, DIN, EN, etc.

Product Range

BA-grade stainless steel precision pipes, stainless steel seamless pipes, stainless steel thick-walled pipes, stainless steel pipes for hydraulic cylinders, stainless steel pipes for air cylinders, stainless steel welded pipes, stainless steel square & rectangular pipes, stainless steel heat exchange pipes, stainless steel corrugated pipes, stainless steel coiled pipes, stainless steel degreased pipes, stainless steel sanitary pipes, stainless steel hollow shaft pipes.

Product Features

Customizable Pipes: All pipes can be customized to meet diverse customer requirements.

One-stop Deep Processing Service: We provide customized post-processing services for pipes, fulfilling customers' diverse and exclusive needs in one stop.

Sound Supply Chain: With abundant resources and stable product performance, we help customers reduce procurement costs and enhance overall operational efficiency.

High Precision: The minimum outer diameter of pipes can reach φ6mm, the minimum wall thickness 0.3mm, with dimensional tolerance controlled within ±0.02mm and straightness within 0.2mm/m.

Non-destructive Testing: Ultrasonic eddy current flaw detection is performed according to customer requirements to ensure the quality of each single pipe.

Key Strengths

Complete product supply, one-stop service, customizable solutions, reliable product quality, professional service team.

Field test

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FAQ

1. Products & Pricing & Payment

Q: What metal materials and related services can you provide?
A: We supply a full range of metal materials, including steel pipes, steel plates, and profiles, and simultaneously offer integrated services such as precision machining and metal stamping, realizing a one-stop closed loop of procurement, processing, and delivery.
 
Q: What types of customization requirements do you support?
A: We can provide customized products and solutions based on your specific specifications (dimensions, tolerances), material requirements, and application scenarios, covering customization needs such as complex, special-shaped parts and high-performance metal products.
 
Q: Will the price change after confirmation of the quotation?
A: The quotation is valid for 15 working days. If the fluctuation range of raw material prices or exchange rates exceeds 5% during this period, we will negotiate with you in advance to adjust the price to avoid additional costs after order confirmation.
 
2. Minimum Order Quantity (MOQ) & Samples
Q: What is your Minimum Order Quantity (MOQ)? Do you accept small-batch trial orders?
A: The MOQ varies by product type, and it is usually 500 units for standard products. We accept small-batch trial orders of 1-100 units to facilitate your verification of product quality and market demand, and the price for trial orders is negotiable.
 
Q: Can you provide samples? How is the sample fee calculated?
A: We can provide up to 2 free samples for standard products, and the courier fee shall be borne by the client (or collected on delivery). A reasonable sample fee will be charged for customized samples, which can be deducted from the subsequent official order.
 
Q: How soon can samples be shipped?
A: Standard samples can be shipped within 3-5 working days; customized samples take 7-10 working days. We ship samples via international couriers to ensure timeliness.

3. Product Quality & Certification

Q: Which international quality standards do your products comply with?
A: Our metal materials and processed parts all comply with international general standards such as ASTM, DIN, JIS, and ISO. Meanwhile, we can customize products that meet special standards such as EU REACH, RoHS, or US FDA according to the requirements of the target market.
 
Q: Can you provide the relevant certification documents required for export?
A: Yes. We can provide documents required for export, such as material composition analysis reports and dimensional inspection reports on demand, ensuring compliance with the customs and industry requirements of the destination country.
 
Q: How to ensure consistent quality between samples and mass-produced products?
A: We implement strict quality control throughout the production process, with traceable records from incoming raw material inspection to finished product delivery inspection. The mass production process strictly follows the technical parameters and process standards of the samples to ensure stable and consistent batch quality.

4. Customization Services & Technical Support
Q: Do you provide OEM/ODM customization services?
A: We support OEM/ODM cooperation models and can customize product dimensions, tolerances, material grades, and surface treatment processes according to your needs. Our engineering team can provide design optimization and mold development support based on your technical drawings or application scenarios.
 
Q: Can you provide detailed product technical data?
A: Yes. On demand, we can provide Product Technical Data Sheets (TDS), detailed specifications, processing flow charts, and inspection reports to assist you in completing local market product certification and application selection. 
 

5. Lead Time & Logistics

Q: What are the production lead times for standard products and customized products, respectively?
A: In-stock orders for standard products can be shipped within 48 hours; mass production takes 10-15 working days. The lead time for customized products is 15-30 working days, and the lead time for special specification products can be determined through separate negotiation.
 
Q: What international logistics methods do you provide? Can you handle customs clearance on behalf of clients?
A: We support three international logistics methods: sea freight, air freight, and international courier (DHL/FedEx/UPS). We can handle export customs clearance procedures on behalf of clients and provide a full set of customs clearance documents, such as commercial invoices, packing lists, and certificates of origin. Under FOB/CIF terms, we cooperate with long-term and high-quality logistics partners to ensure efficient and smooth transportation.
 
6. After-Sales Service
 Q: How to solve technical or quality problems after receiving the goods?
A: Our after-sales team provides 24/7 all-round support. After receiving feedback on problems, we will respond quickly and provide reasonable solutions, such as maintenance and replacement, based on the actual situation to protect clients' rights and interests.
 
7. Company Strength & Cooperation Model
 Q: Can you provide relevant materials to prove the company's strength (such as factory scale and production capacity)?
A: Yes. We can provide factory real-scene videos, production line photos, and third-party audit reports (such as SGS audit reports) to intuitively show our production capacity and management level. Meanwhile, we welcome clients to visit our factory with an advance appointment.
 
Q: How to handle sudden changes in international trade policies (such as tariff adjustments and export restrictions)?
A: We have a professional risk control team that monitors global trade policy dynamics in real time. In case of policy changes, we will notify you immediately and provide alternative solutions (such as adjusting product specifications to meet new regulations and changing transportation routes) to minimize the impact on your orders.

8. Order Tracking & Communication

Q: How to track the order progress?
A: After order confirmation, we will assign a dedicated account manager to you, who will take the initiative to update progress information at key nodes such as production, shipment, and logistics via email, WhatsApp, WeChat,t and other channels. You can also log in to the client-exclusive portal to check the order status in real time.
 
Q: What is the response time for inquiries and follow-ups?
A: We promise to respond to all client inquiries within 24 working hours. For urgent matters, you can directly call your dedicated account manager, and we will provide immediate assistance. Our team is familiar with major global time zones to ensure efficient communication with clients from all countries.