This general specification contains the mandatory requirements to the ASTM standards listed herein for seamless pipes and tubes made from nickel and nickel alloys. In case of conflict, the requirements listed in the particular product specification takes precedence over those listed here.

1.1 This specification contains various requirements that, with the exception of Sections 5 and 10, are mandatory requirements to the following ASTM nickel and nickel alloy, seamless pipe and tube specifications:

Title of Specification

ASTM
Designation2

Nickel Seamless Pipe and Tube

B161

Seamless Nickel and Nickel Alloy, Condenser and Heat Ex-
 changer Tubes

B163

Nickel-Copper Alloy (UNS N04400) Seamless Pipe and Tube

B165

Nickel-Chromium-Iron Alloys (UNS N06600, N06601, and
 N06690) Seamless Pipe and Tube

B167

Nickel-Iron-Chromium Alloy Seamless Pipe and Tube

B407

Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825
 and N08221) Seamless Pipe and Tube

B423

Nickel-Chromium-Molybdenum-Columbium Alloys (UNS
 N06625) Pipe and Tube

B444

Nickel-Chromium-Iron-Columbium-Molybdenum-Tungsten Alloy
 (UNS N06102) Seamless Pipe and Tube

B445

Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and UNS
 N08332) Seamless Pipe

B535

Copper-Beryllium Alloy Forgings and Extrusion

 B570

Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube

B622

UNS N08028 Seamless Tubes

B668

UNS N08904, UNS N08925 and UNS N08926 Seamless Pipe
 and Tube

B677

Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08366 and
 UNS N08367) Seamless Pipe and Tube

B690

Ni-Cr-Mo-Co-W-Fe-Si Alloy (UNS N06333) Seamless Pipe and
 Tube

B722

Seamless UNS N08020, UNS N08026, and UNS N08024
 Nickel-Alloy Pipe and Tube

B729

1.2 One or more of the test requirements of Section 5 apply only if specifically stated in the product specification or in the purchase order.

1.3 In case of conflict between a requirement of the product specification and a requirement of this general specification, only the requirement of the product specification needs to be satisfied.

1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.5 The following safety hazards caveat pertains only to the test requirements portion, Section 5, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.