Carbon Steel Hex Nipple

What is Carbon Steel Hex Nipple

Carbon steel hex nipples are fittings with male threads on both ends, similar to barrel nipples.The distinguishing feature of hex nipples lies in their shape. As the name suggests, hex nipples have a hexagonal shape at the centre, providing a hexagonal surface for easy gripping.

Hex Nipple is commonly used accessory in industrial pipeline connections. Common types including equal diameter hex nipple and reduced diameter hex nipple, with a hexagonal cross-section in the middle and threaded connections on both sides.

Hex nipple can made of many different materials such as Carbon Steel Hex Nipple, Alloy Steel Hex Nipple and Stainless Steel Hex Nipple and so on, what are suited for connecting various pipelines.

Standard of Hex Nipple

Carbon steel hex nipple is applied in various industrial applications, such as oil refineries chemical processing, petrochemical and many other industries. The production standard of forged hex nipple is ASME/ANSI B16.11 and  BS3799.

Schedule & Dimension of Carbon Steel Hex Nipple

Hex Nipple Weight Reference

Material Grade of Carbon Steel Hex Nipple

Carbon steel hex nipple have many specific benefits, such as  low price, excellent process performance (weldability & cold formability). General engineering structures and ordinary mechanical parts. Material grades of hex nipple as below:

•  ASTM A105, 20#  

•  ASTM A350 LF2, 16Mn  

•  ASTM A694 F42 / 46 / 56 / 60 / 65

Production Process For Carbon Steel Hex Nipple

Blanking

The carbon steel pipe fittings materials are used commonly for pipes and bars. The shapes of the blank to select the cutting method based on the material properties and product. Blank shape, size and other requirements according to different process requirements.

Forming (welding)

For all pipe manufacturing process, the carbon steel pipe cross-section is an indispensable process. For produce carbon steel hex nipple and based on the forming process of the different products are different, usually the bars need longer than the needed length.

Heat treatment

The heat treatment process is an important part of the pipe manufacturing. Heat treatment step including: heating, insulation and cooling, eliminating the forming process of hardening, residual stress and deformation defects of metal pipe after forming the metal structure, then performance carbon steel hex nipple of a steel pipe network, restored to the state or improve its performance in the deformation processing.

Surface treatment

Carbon steel hex nipple surface treatment is usually by sandblasting, shot blasting, grinding, pickling method to remove the product surface rust, scratches and other products to achieve a smooth surface to meet the follow-up processing, and inspection requirements.

Cutting

Cutting pipe, soldering end, structural size, geometric tolerance machining processes. Also includes some pipe cutting, the diameter of processing. The cutting machine is mainly via a dedicated machine or universal; oversized structural steel pipe, when the existing machine capacity can not meet the processing requirements, you can also use other methods to complete processing, such as large diameter elbow with gas cutting, grinding method.

Non-destructive testing

Non-destructive testing is an important process of the possible defects of the test materials and fittings processing for produce the greatly carbon steel hex nipple. The majority of pipe product standards for the requirements of the non-destructive testing requirements, but requirements are not consistent. In addition to meeting the product standards and ordering requirements, nondestructive testing, more stringent on quality control factory to develop non-destructive testing requirements according to the materials, processes, and internal quality control requirements in order to ensure the quality of manufactured products.