Quality inspection of ASTM A105N 24″x3″ MSS SP-97 weldolet for Singapore client

As a leading manufacturer in the pipeline systems industry, Haihao Group maintains the highest standards in product quality. Recently, we conducted a comprehensive quality inspection on a batch of ASTM A105N 24″x3″ MSS SP-97 weldolet manufactured for a Singapore-based client. This inspection ensures compliance with industry standards and guarantees the reliability of our pipeline fittings in demanding applications.

Key Quality Inspection Procedures

1.Dimensional & Visual Inspection

Ensuring that the external dimensions and surface finish meet the precise specifications.

Checking for any surface defects such as cracks, pits, or irregularities.

2.Chemical Composition Analysis

To meet the ASTM A105N standard, the following chemical requirements were verified:

Carbon Equivalent (CE) ≤ 0.43%

Carbon (C) ≤ 0.22% (by product analysis)

Sulfur (S) ≤ 0.025% (for forgings)

3.Hardness Testing

Ensuring the maximum hardness does not exceed 22 HRC, in compliance with industry standards.

4.Heat Treatment & Fine Grain Practice

Normalized treatment applied to all sizes and pressure classes, ensuring improved mechanical properties.

Fine grain practice (ASTM E112, grain size 6 or finer) for enhanced material toughness and strength.

Why Quality Inspection is Critical?

Ensures material reliability in high-pressure and high-temperature applications.

Prevents premature failures in pipeline systems.

Meets international safety and performance standards.

Haihao Group: Your Trusted Supplier for High-Quality Pipeline Components

With decades of experience in forged fittings and pipeline accessories, Haihao Group is committed to providing high-quality, certified products for global clients. Our strict quality control process ensures that every product meets the highest industry standards for safety, durability, and performance.

For premium-grade pipeline fittings, contact Haihao Group today! Email:sales@haihaogroup.com