Product Description
Crafted from high-grade stainless steel billets via precision piercing, cold drawing and rolling processes, our stainless seamless steel pipe boasts a weld-free structure that eliminates potential weak points. This design ensures exceptional structural integrity, corrosion resistance and high-temperature durability, making it ideal for critical applications in chemical processing, oil & gas, pharmaceuticals and food industries. With uniform wall thickness and smooth inner surface, it enables efficient fluid transport while reducing maintenance costs.
Chemical Composition & Mechanical Properties
|
Grade |
C (Max, %) |
Mn (Max, %) |
P (Max, %) |
S (Max, %) |
Si (Max, %) |
Cr (%, Range) |
Ni (%, Range) |
Mo (%, Range) |
Other Elements (Max, %) |
|---|---|---|---|---|---|---|---|---|---|
|
304 |
0.08 |
2.00 |
0.045 |
0.030 |
1.00 |
18.00-20.00 |
8.00-11.00 |
- |
N: 0.10 |
|
304L |
0.035 |
2.00 |
0.045 |
0.030 |
1.00 |
18.00-20.00 |
8.00-13.00 |
- |
N: 0.10 |
|
316 |
0.08 |
2.00 |
0.045 |
0.030 |
1.00 |
16.00-18.00 |
10.00-14.00 |
2.00-3.00 |
N: 0.10 |
|
316L |
0.035 |
2.00 |
0.045 |
0.030 |
1.00 |
16.00-18.00 |
10.00-15.00 |
2.00-3.00 |
N: 0.10 |
|
Grade |
Tensile Strength (Min, psi) |
Yield Strength (Min, psi) |
Elongation (Min, %) |
Rockwell Hardness (Max) |
|---|---|---|---|---|
|
304 |
85,000 |
35,000 |
50 |
95 HRB |
|
304L |
80,000 |
30,000 |
50 |
90 HRB |
|
316 |
85,000 |
35,000 |
50 |
95 HRB |
|
316L |
80,000 |
30,000 |
50 |
90 HRB |
Factory Strength
As a leading manufacturer with over 20 years of experience, we operate a state-of-the-art production base covering 20,000+ square meters, equipped with advanced piercing, rolling and testing equipment. Our annual output of stainless seamless steel pipe reaches 15,000+ tons, enabling us to fulfill both bulk orders and small-batch custom requirements efficiently.
Factory Advantages:
Cost-Effective Pricing: Direct factory supply eliminates middlemen, offering competitive prices without compromising quality.
Strict Quality Control: From raw material inspection to finished product testing, we implement a full-process QC system with ultrasonic, eddy current and hydrostatic tests.
Comprehensive Certifications: Hold ISO 9001, ISO 14001, EN 10204 3.1/3.2, PED and SGS certificates to meet global standards.
Tariff Optimization: Partner with reliable third-party logistics providers for transshipment solutions, helping customers reduce tariff costs in target markets.
Quality Control
Our products are fully certified by authoritative institutions, with complete test reports for each batch, including material composition analysis, mechanical performance test and non-destructive testing records. This transparency has earned us trust from customers worldwide, who recognize our commitment to quality and reliability.
We have established stable long-term cooperation with 500+ customers in chemical, oil & gas, and pharmaceutical industries. Our professional pre-sales consultation, on-time delivery and after-sales support have made over 80% of customers choose to reorder and expand cooperation scope, building a mutually beneficial business ecosystem.
Packaging & Logistics
We adopt seaworthy packaging to ensure product safety during transportation: each pipe is wrapped with waterproof paper and plastic film, bundled with steel strips, and placed in wooden cases or pallets. For special requirements, we also provide customized packaging such as anti-rust oil coating and shockproof protection.
Our logistics network covers 100+ countries and regions, with flexible shipping options including sea, air and land transport. We work closely with professional freight forwarders to provide door-to-door service, and offer timely shipment tracking to ensure on-time delivery.
FAQs
Q: Can you provide custom sizes beyond standard specifications?
A: Yes, we offer customized outer diameter (6mm-914mm) and wall thickness (0.5mm-68mm) according to your drawings or technical requirements, with a minimum order quantity of 500kg.
Q: How long is the production lead time for bulk orders?
A: For standard grades (304/316), the lead time is 7-15 working days; for custom grades or large quantities (over 500 tons), it takes 20-30 working days.
Q: Do you accept third-party inspection before shipment?
A: Absolutely. We welcome inspection by SGS, BV or other authorized institutions at our factory, and will provide full support for the inspection process.
Q: How do you handle product quality complaints?
A: We provide a 12-month quality guarantee. In case of quality issues confirmed by joint inspection, we will arrange replacement, refund or compensation according to the contract terms promptly.
Q: Can you help with customs clearance in my country?
A: Yes, our logistics team will prepare all necessary export documents (commercial invoice, packing list, certificate of origin) and cooperate with your local customs broker to ensure smooth clearance.
