Introduction

ASTM B163 Seamless Tube is the standard specification for seamless nickel and nickel alloy condenser and heat-exchanger tubes, covering outside diameters up to 3 in. (76.2 mm) with minimum wall thicknesses of 0.148 in. (3.76 mm) and under. This ASME SB163 tube covers a comprehensive range of nickel alloy seamless tube grades including Nickel 200/201, Monel 400, Inconel 600/601/690, Incoloy 800/800H/800HT, and Incoloy 825, offering a combination of corrosion resistance, high temperature performance, excellent thermal conductivity, and oxidation resistance essential for heat exchanger and condenser service. The material is widely used in shell and tube heat exchangers, condensers, boilers, power plants, chemical processing, petrochemical industry, desalination plants, offshore platforms, and marine industry applications. Available in straight tube and U‑bend configurations, with cold drawn and bright annealed finishes.

Specifications & Process Options

Applications

1. Heat Exchangers & Condensers

• For shell and tube heat exchangers and condenser tubing in power plants and chemical facilities, ASTM B163 heat exchanger tube provides the corrosion resistance and thermal conductivity essential for efficient heat transfer. The seamless nickel alloy tube is widely specified for reboiler bundles, evaporator coils, and cooling water systems.

• For steam surface condensers in power generation, ASTM B163 condenser tube withstands high-temperature steam and aggressive cooling water conditions, maintaining structural integrity and heat transfer efficiency over extended service life.

• For U‑bend heat exchanger configurations, ASTM B163 U‑bend tube eliminates weld seams in the bend radius, providing superior resistance to corrosion fatigue and stress corrosion cracking in critical heat transfer applications.

• For precision and thin-wall tube requirements, ASTM B163 precision tube and ASTM B163 thin wall tube offer tight dimensional tolerances and improved heat transfer coefficients, reducing material costs while maintaining performance.

2. Power Generation & Boiler Systems

• For superheater tubes, water wall panels, and economizer coils in utility and industrial boilers, Inconel 600 seamless tube and Incoloy 800H tube provide high-temperature strength and oxidation resistance in demanding boiler service.

• For feedwater heaters and heat recovery steam generators (HRSG), ASTM B163 boiler tube maintains mechanical properties at elevated temperatures while resisting corrosion from high-purity water and steam environments.

• For nuclear power plant steam generators, Inconel 690 tube offers exceptioznal resistance to stress corrosion cracking in high-temperature, high-purity water environments, making it the standard material for pressurized water reactor (PWR) steam generator tubing.

3. Chemical Processing & Petrochemical Industry

• For chemical processing equipment handling corrosive fluids including sulfuric acid, hydrochloric acid, and caustic solutions, Incoloy 825 tube (UNS N08825) provides outstanding resistance to pitting and crevice corrosion.

• For petrochemical industry heat exchangers and process gas coolers, Incoloy 800 tube and Incoloy 800HT tube withstand high temperatures and aggressive hydrocarbon environments.

• For pharmaceutical equipment requiring high purity and corrosion resistance, Nickel 200 tube (UNS N02200) maintains surface integrity with non-contaminating corrosion resistance through repeated sterilization cycles.

4. Desalination & Marine Industry

• For desalination plant evaporators and brine heaters, Monel 400 tube (UNS N04400) offers exceptional resistance to seawater corrosion and biofouling, making it the standard choice for marine heat exchanger service.

• For offshore platforms and marine industry heat exchangers, ASTM B163 seamless tube withstands salt spray and chloride-rich environments, providing long-term reliability in aggressive marine conditions.

5. Oil & Gas and Industrial Processing

• For oil and gas topside process coolers and subsea heat exchangers, Inconel 600 tube and Incoloy 825 tube resist H₂S/CO₂ environments and produced water corrosion.

• For industrial processing equipment including pulp and paper digesters and bleach plant heat exchangers, ASTM B163 nickel alloy tube provides the corrosion resistance needed for demanding chemical environments.

FAQ – ASTM B163 Tube

Q: What is the difference between ASTM B163 and ASTM B167 for nickel alloy tubes?

A: ASTM B163 is specifically for seamless nickel and nickel alloy condenser and heat-exchanger tubes with maximum OD of 3 in. (76.2 mm), supplied as straight or U‑bend for heat exchanger service. ASTM B167 covers nickel‑chromium‑iron alloy pipe in larger diameters for general piping applications. ASTM B163 tubes are cold drawn and supplied in annealed condition for heat exchanger service.

Q: What is the difference between Nickel 200 and Nickel 201 tubes under ASTM B163?

A: Nickel 200 tube (UNS N02200) is commercially pure nickel (99.0% Ni) for general corrosive service up to 600°F (315°C). Nickel 201 tube (UNS N02201) has lower carbon (0.02% max) for elevated temperature service above 600°F, preventing graphitization and embrittlement in high-temperature heat exchanger applications.

Q: What nickel alloy grades are commonly available under ASTM B163?

A: ASTM B163 covers a wide range of nickel and nickel alloys including Nickel 200/201, Monel 400, Inconel 600/601/690, Incoloy 800/800H/800HT, and Incoloy 825. Each grade is selected based on the specific corrosion, temperature, and mechanical requirements of the heat exchanger or condenser application.

Q: Can ASTM B163 tubes be supplied as U‑bend tubes?

A: Yes. ASTM B163 seamless tube is commonly supplied in U‑bend configurations for shell and tube heat exchangers to accommodate thermal expansion. Seamless construction ensures no weld seams in the bend radius, providing superior resistance to corrosion fatigue and stress corrosion cracking in critical heat transfer applications.

We are a trusted ASTM B163 Tube Supplier and ASTM B163 Seamless Tube Manufacturer, China‑based, serving heat exchanger fabricators, power plants, chemical processors, and marine industry equipment builders worldwide. All products comply with ASTM B163 / ASME SB163 with EN 10204 3.1 mill certificates, PMI verification, hydrostatic and eddy current test reports. We offer ASTM B163 seamless tube, heat exchanger tube, condenser tube, straight tube, U‑bend tube, precision tube, and thin wall tube in custom sizes, with cold drawn and bright annealed finishes. Grades include Nickel 200/201, Monel 400, Inconel 600/601/690, and Incoloy 800/800H/800HT/825. Contact us at info@monokj.com for size chart, pricing, or custom requirements.