Round Stainless Steel Pipe 440

 

Round Stainless Steel Pipe 440 is a high-carbon martensitic stainless steel pipe with a core chromium content of 16.0-18.0% and a carbon content of 0.95-1.20%. After professional heat treatment, it achieves the best strength, hardness, and wear resistance among all stainless steel alloys, while also maintaining moderate corrosion resistance. Suitable for various complex working conditions, it is the preferred pipe material for industries such as machinery manufacturing, chemical engineering, and aerospace. Its outer diameter ranges from 4mm to 630mm, wall thickness from 0.6mm to 40mm, and length from 1 to 12 meters; any size can be customized upon request. Surface treatments include black, bright polished, matte, No.4, and BA, meeting the appearance and usage requirements of different industries. It can be used directly without secondary processing.

 

 

 

Parameter Name	Specification
Product Name	Round Stainless Steel Pipe 440
Production Process	Hot Rolling, Cold Rolling (Seamless/Welded Optional)
Outer Diameter (OD)	4mm~630mm (Customizable)
Length	1~12 Meters (Customizable Length)
Chemical Composition (%)	C: 0.60~1.20, Si≤1.0, Mn≤1.0, Cr: 16.0~18.0, S≤0.03, P≤0.04, Mo≤0.75

 

 

Machinery Manufacturing: Round Stainless Steel Pipe 440 is used to manufacture core components such as bearings, bushings, valve seats, gears, and cutting tools. Utilizing its high wear resistance and high hardness, it improves the service life and operational stability of mechanical equipment, meeting the needs of heavy machinery and precision instrument manufacturing.

Chemical and Petroleum Industries: As chemical and petroleum transportation pipelines, they can withstand corrosive media such as weak acids, organic solvents, and petroleum products, while also being suitable for high-temperature conditions. They are widely used in chemical plants, oil refineries, water treatment plants, and other scenarios, ensuring long-term stable pipeline operation.

High-End Manufacturing Industries: Aerospace components, automotive parts, medical devices (surgical instruments), etc., leveraging their excellent mechanical and processing properties, they meet the stringent requirements of high-end manufacturing for material precision and stability, facilitating product upgrades.

Public Welfare and Construction Industries: Food processing equipment, furniture and kitchenware, building structural components, etc., combining corrosion resistance and easy cleaning characteristics. Surface polishing can enhance their appearance, adapting to the needs of public welfare applications, and providing safety, environmental friendliness, and odorlessness.

 

 

 

 

 

 

Henan Tieyao Trading Co., Ltd. in Anyang, Henan Province, with our own factory, we maintain a healthy inventory of over 1,700 conventional vacuum products, ensuring prompt shipment for standard purchases. Our dedicated R&D team specializes in new designs and special requirements. We accept OEM/ODM orders and have established strong relationships with clients from East Asia, South Asia, North America, Europe, and Oceania. Nearly 99% of our international customers order again, and another 96% are repeat customers. To foster long-term relationships, we offer preferential discounts to returning customers and repeat orders. We understand that in an ever-changing market environment, competitive pricing, high-quality products, and attentive service are the keys to our success. We are committed to improving our business with reliability, professionalism, and compassion, all with a progressive perspective.

 

 

 

 

 

Q1: What is the difference between 440 stainless steel round pipes and 304/316 stainless steel round pipes?

A1: The core difference lies in the material and performance. 440 is high-carbon martensitic stainless steel, emphasizing high hardness and wear resistance, suitable for high-wear environments; 304 and 316 are austenitic stainless steels, emphasizing corrosion resistance, suitable for humid and highly corrosive environments. After heat treatment, 440 stainless steel round tubes have a hardness far exceeding that of 304 and 316, making them the preferred material for machinery manufacturing and high-end equipment, while 304 and 316 are more suitable for civilian and light industrial applications.

Q2: Does your 440 stainless steel round tube support export? What certifications can you provide?

A2: We support global export and can provide authoritative certifications such as ISO, SGS, and BV. We can also provide certification documents that meet the standards of the target market according to customer needs. We support various trade terms such as FOB, CIF, CFR, and EXW, with flexible payment methods. We can handle customs clearance and logistics in a one-stop service. Our monthly supply capacity is 1000 tons, meeting the needs of bulk purchases in foreign trade.

Q3: What is the delivery time for customized specifications of 440 stainless steel round tubes?

A3: Standard specifications (outer diameter 4mm~200mm, wall thickness 0.6mm~6.0mm) are in stock and will be shipped within 7 business days after payment. Customized specifications (special outer diameter, wall thickness, length, or surface treatment) have a delivery time of 10~20 business days, depending on the complexity of the customization and the purchase quantity. We will track the production progress throughout the process to ensure on-time delivery.

Q4: How can you ensure that the received product is consistent with the sample?

A4: We promise that the sample and the finished product are consistent. Samples of each batch of finished products will be randomly selected for testing, and the testing items will be completely consistent with the sample received by the customer. We also provide a complete finished product testing report. Customers can re-inspect the goods after receiving them. If there are any issues such as quality discrepancies or specification deviations, we will unconditionally return or exchange the goods and bear the corresponding logistics costs to protect the rights and interests of our customers.

Contact now

Hot Tags: round stainless steel pipe 440, China round stainless steel pipe 440 manufacturers, suppliers, factory, 304 stainless steel welded pipe, 316 stainless steel seamless tube, 316 stainless steel welded pipe, duplex stainless steel pipe, duplex stainless steel seamless pipe, stainless steel welded pipe