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Ultra High Pressure &
Instrumentation Tubing

Premium Bright Annealed (BA) & Electropolished (EP) Stainless Steel Seamless Tubes for High-Purity Gas and Liquid Systems

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About ZhongRui

Huzhou ZhongRui Cleaning Technology Co., Ltd. is a leading manufacturer of ultra-clean stainless steel BA & EP tubing and fittings.

ZRTUBE Factory

Precision Engineering for High-Purity Applications

We specialize in manufacturing stainless steel BA (Bright Annealed) and EP (Electropolished) seamless tubes with inner surface roughness as low as Ra 0.25μm. Our advanced production techniques and premium raw materials ensure exceptional purity and stability in transmission media.

Our ultra-clean tubes are designed for high-purity gas and liquid pipeline systems in critical industries such as semiconductor, hydrogen energy, biopharmaceuticals, food & beverage, and petrochemicals.

36,000㎡
Factory Area
3
Factories
200+
Staff
$22M
Annual Sales

Our Premium Products

Explore our range of high-purity stainless steel tubing and fittings engineered for performance, reliability, and cleanliness.

Instrumentation Tube

Instrumentation Tube

Stainless steel seamless tubing for precision instrumentation systems.

  • Material: 304/304L, 316/316L
  • Diameter: OD 3.18mm – 60.5mm
  • Finish: Bright Annealed (BA)
UHP TP 316L Tube

UHP TP 316/316L Tube

Ultra High Pressure tubing for demanding industrial environments.

  • Grade: 316L, UHP
  • Pressure: Up to 10,000 psi
  • Applications: Hydrogen, Oil & Gas
Bright Annealed BA Tube

Bright Annealed (BA) Tube

Seamless stainless steel tubes with mirror finish and low surface roughness.

  • Roughness: Ra ≤ 0.5μm
  • Material: Austenitic SS, Duplex, Ni Alloys
  • Diameter: 3.18mm – 60.5mm
Electropolished EP Tube

Electropolished (EP) Tube

Highest purity finish with Ra ≤ 0.25μm for critical applications.

  • Finish: Electropolished (EP)
  • Roughness: Ra ≤ 0.25μm
  • Standards: ASME BPE SF1-SF6
High Purity BPE Tubing

High Purity BPE Tubing

ASME BPE-compliant tubing for biopharmaceutical and food industries.

  • Standard: ASME BPE
  • Grades: SF1 to SF6
  • Material: 316L EP
Nickel Alloy Tubing

Nickel Alloy Tubing

Corrosion-resistant tubing for aggressive chemical environments.

  • Alloys: 825, 625, 904L, 32750
  • Applications: Petrochemical, Offshore
  • Finish: BA or EP
Tube Fittings & Valves

Tube Fittings & Valves

High-integrity fittings for instrumentation and process systems.

  • Material: 316L SS
  • Sizes: 1/4" to 2" (10A–50A)
  • Grades: BA & EP
Weld Fittings

Weld Fittings (BA & EP)

Elbows, tees, and connectors for seamless welding systems.

  • Type: Butt-weld, Socket-weld
  • Material: 316L
  • Finish: BA or EP
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Why Choose ZRTUBE?

Certified Quality

ISO-certified manufacturing with strict quality control and full traceability. Our products meet ASME BPE, ASTM, and other international standards.

Ultra-Clean Surfaces

Achieve surface roughness as low as Ra 0.25μm with electropolishing. Ideal for semiconductor, biopharma, and food-grade applications.

Global Applications

Trusted in hydrogen energy, oil & gas, automotive, medical, and key national projects worldwide. Proven reliability under extreme conditions.

Key Applications

Our high-purity tubing systems serve critical industries requiring reliability, cleanliness, and performance.

Semiconductor

Automotive & Oil/Gas

Hydrogen Energy

Biopharmaceuticals

Food & Beverage

Medical & Research

Photovoltaic

Process Plants

36,000+
㎡ Factory Area
200+
Skilled Staff
$22M
Annual Sales
3
Manufacturing Plants

Frequently Asked Questions

What is the difference between BA and EP tubing?

Bright Annealed (BA) tubing undergoes heat treatment in a controlled atmosphere for a clean, reflective surface (Ra ≤ 0.5μm). Electropolished (EP) tubing is chemically treated to remove surface impurities and achieve ultra-smooth finishes (Ra ≤ 0.25μm), ideal for high-purity applications.

What industries use UHP tubing?

Ultra High Pressure (UHP) tubing is used in hydrogen storage, oil & gas, chemical processing, and automotive fuel systems where pressures exceed 5,000 psi.

Do you offer custom tube lengths and diameters?

Yes, we manufacture tubes from OD 3.18mm to 60.5mm and can cut to custom lengths. Contact us with your specifications.

Are your products ASME BPE compliant?

Yes, our high-purity BPE tubing meets ASME BPE standards with surface finishes from SF1 to SF6, suitable for biopharmaceutical and food processing applications.

Get in Touch

For inquiries, quotes, or technical support, visit our official website to contact the ZRTUBE team.

Visit Official Website to Contact

Email: zjw@zrtube.com

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