Official website ★ Zhejiang Senmai Clean Special Materials Co., Ltd., semiconductor-grade EP&BA seamless precision tubes, ultra-clean stainless steel precision tubes, SENMAI clean special materials, en.senmai.cn

Our products

Whether it's bright annealing or electrolytic polishing, whether the material is 316LVV or a special alloy, we can provide the right product for every application.

BA tube

Accuracy: ≤ 0.05mm
The roughness of the inner tube wall
can reach 0.2μm
Features: good corrosion resistance,
high dimensional accuracy,
good processing performance, etc

EP tube

Accuracy: ≤ 0.05mm
The roughness of the inner tube wall
can reach 0.2μm
Features: good corrosion resistance,
high dimensional accuracy,
good processing performance, etc

Elbow & Cap series

Material: 304/316L, EN 1.4404/1.4435, etc
Surface roughness: Ra≤0.8μm
Size: Inch ASTM A269/A632

Tee & Reducer series

Material: 304/316L, EN 1.4404/1.4435, etc
Surface roughness: Ra≤0.8μm
Size: Inch ASTM A269/A632

Service

At Senmai, we not only assist you in selecting the right products and developing customized solutions,but also offer comprehensive services to simplify your processes.

Professional team

We regularly conduct training for all employees to precisely control the production processes of ultra-clean tubing, meeting the needs of various industries.

Inspection & Testing

Our quality inspection department not only rigorously tests our own products, but also provides diversified laboratory services to third parties.

Warehouse & Logistics

Covering traditional consignment warehouses, containers, and exchangeable mobile storage units, ensuring clean packaging and safe delivery of products.

Cleaning process

We offer a variety of cleaning solutions, including ASTM A632 S3 standard internal surface cleaning, high-purity ultrasonic vacuum cleaning, and residual gas analysis.

Excellent service

Our sales team is available online 24/7. Our engineers are always on standby to ensure efficient handling of detailed technical issues.

Industry applications

For over two decades, globally renowned semiconductor and pharmaceutical companies have relied on the outstanding quality of Senmai products. No matter how unique your requirements are, we will always provide you with support.

Semiconductor

Grade: TP316L, EN 1.4404/1.4435, VIM VAR, BN2
Application: BA+EP(Electro polishing)

Special gases

Grade: TP316L
Application: Transport of special gases,blowing and venting of gases

Pharmaceutical engineering

Grade: TP316L
Application: Pharmaceutical process, gas and fluid pipeline transportation

Biomedical

Grade: TP316L
Application: Fluid transportation, sterilization equipment, biological sample storage

Automotive

Grade: SUS316/316L
Application: GDl Engine

Oil&Gas / Petrochemicalplant

Grade: TP316L,EN 1.4404/1.4435,904L,Monel 400 Incoloy825, 2.5MO,6MO
Application: Instrumentation & piping line, Heat Exchanger

Shipbuilding industry

Grade: TP316/316L, 904L, S31803, In coloy825, Monel400, 2.5MO, 6MO
Application: Umbilical Tube, PIT(pre Insulated Tube)

Senmai Clean participated in the 11th International Pipe Exhibition

Senmai Clean has become a highlight in the application of medium transmission channels in high-tech industries such as semiconductors, thanks to the outstanding performance of its stainless steel seamless precision BA&EP tubes. With the continuous innovation of technology and changes in market demands, the stainless steel pipe industry will constantly encounter new opportunities and challenges.

2025-12-25

What is the BA level stainless steel precision tube?

The stainless steel BA pipe is called the bright annealed pipe. Its characteristic is that the inner surface is smooth and shiny, with a certain degree of glossiness, extremely low roughness, and good weldability. Stainless steel BA pipes are mainly used for the transportation of some special gases and fluid media. In fact, it is also the base material of EP pipes.

2025-12-25

The advantages of stainless steel seamless pipes in the application of high-purity gas pipelines

Stainless steel seamless pipes exhibit significant advantages in high-purity gas pipeline applications. Due to their excellent corrosion resistance and high cleanliness, stainless steel seamless pipes are the ideal choice for high-purity gas pipeline systems.

2025-12-25

Senmai clean stainless steel EP tube

Senmai Clean Stainless Steel EP Pipe uses our company's BA asthe main pipe and then undergoes electrolytic chemical polishingto achieve industry standards for surface roughness, surfacedefects, Cr/Fe ratio, oxide layer thickness, etc. It has excellentcorrosion resistance and can maintain good performance even inharsh environments such as high temperature and high pressure.Due to its excellent performance, Senmai clean stainless steel EPpipes are widely used in pipeline transportation systems in industriessuch as semiconductors, optoelectronics, bio BPE, specialty gases,and new energy.

2024-09-30

How to select the stainless steel seamless pipes suitable for high-purity gas pipelines?

When selecting stainless steel seamless pipes suitable for high-purity gas pipelines, it is necessary to focus on four core dimensions: gas purity requirements, working conditions, industry standards, and processing and installation needs. Based on these, a precise match should be made in accordance with specific application scenarios. Here are the structured selection steps and key points:

2025-12-25

What inspections are required for stainless steel seamless pipes before installation?

The core objective of the inspection of stainless steel seamless pipes before installation in high-purity gas pipeline systems is to verify that the pipe quality meets standards, the surface cleanliness complies with requirements, and there are no defects or hidden dangers, in order to prevent unqualified pipes from entering the installation process and causing gas pollution or leakage. The inspection needs to cover five core dimensions: material verification, appearance and dimensional inspection, surface treatment quality inspection, non-destructive testing, and cleanliness inspection

Achieved long-term cooperation
with over 3000 customers

2001

Established(Year)

12200+

Capital(Ten Thousand Yuan)

20000+

Area(Square Meter)

10+

Production Line(Strip)

Zhejiang Senmai Clean Special Materials Co., Ltd

Address：No. 88, Gaoxin Avenue, Longwan District, Wenzhou, Zhejiang

Tel：+86-577-8691 1001

Mobile：+86-135 8768 5662

E-Mail：sm@senmai.net.cn

Wechat

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BA tube

Accuracy: ≤ 0.05mm The roughness of the inner tube wall can reach 0.2μm Features: good corrosion resistance, high dimensional accuracy, good processing performance, etc

EP tube

Accuracy: ≤ 0.05mm The roughness of the inner tube wall can reach 0.2μm Features: good corrosion resistance, high dimensional accuracy, good processing performance, etc

Elbow & Cap series

Material: 304/316L, EN 1.4404/1.4435, etc Surface roughness: Ra≤0.8μm Size: Inch ASTM A269/A632

Tee & Reducer series

Material: 304/316L, EN 1.4404/1.4435, etc Surface roughness: Ra≤0.8μm Size: Inch ASTM A269/A632

Senmai Clean participated in the 11th International Pipe Exhibition

What is the BA level stainless steel precision tube?

The advantages of stainless steel seamless pipes in the application of high-purity gas pipelines

Senmai clean stainless steel EP tube

How to select the stainless steel seamless pipes suitable for high-purity gas pipelines?

What inspections are required for stainless steel seamless pipes before installation?

Accuracy: ≤ 0.05mm
The roughness of the inner tube wall
can reach 0.2μm
Features: good corrosion resistance,
high dimensional accuracy,
good processing performance, etc

Accuracy: ≤ 0.05mm
The roughness of the inner tube wall
can reach 0.2μm
Features: good corrosion resistance,
high dimensional accuracy,
good processing performance, etc

Material: 304/316L, EN 1.4404/1.4435, etc
Surface roughness: Ra≤0.8μm
Size: Inch ASTM A269/A632

Material: 304/316L, EN 1.4404/1.4435, etc
Surface roughness: Ra≤0.8μm
Size: Inch ASTM A269/A632