Size range

Outer diameter (OD): The standard range is usually 5-100 mm, and the common international standard specifications are concentrated in 8-76 mm (such as ASTM B111 stipulates ≤80 mm).

Wall thickness (WT): 0.5-25 mm, but the common wall thickness of heat exchangers is 0.5-6 mm, and higher thickness can be customized.

Length: Support single random length (5-7 meters), double random length or customized according to customer needs.

III. International standards

Core standards:

ASTM B111/B111M: The main standard for seamless copper alloy pipes, covering size, chemical composition and mechanical properties.

ASME SB111: Applicable to pressure vessels and boiler equipment.

BS EN 12451/BS 2871-2: European standard, compatible with ASTM.

JIS H3300/DIN 1785: Japanese and German standards, applicable to corresponding markets.

Other related standards:

ASTM B395 (welded pipe), ASTM B251 (general purpose pipe).

API 11AX: Supplementary requirements for oil and gas applications.