ASTM B165 Nickel Alloy 400 UNS N04400 Cold Drawn Seamless Pipe OD 8mm to 711mm

ASTM B165 Nickel Alloy 400 UNS N04400 Cold Drawn Seamless Pipe OD 8mm to 711mm

Why Choose MTSCO?

MTSCO specializes in the supply of nickel alloy and stainless steel products, dedicated to providing high-quality piping and integrated solutions to global customers. With extensive experience serving projects in the chemical, marine engineering, energy equipment, and industrial piping sectors and backed by a robust supply chain—we ensure rapid response to customer needs, reliable delivery, and end-to-end support. Please contact us to learn more about how we can assist with your projects.

Specifications

Cold Drawn Process

Cold drawing is a key processing method for controlling the dimensions and surface quality of seamless pipes. Following initial forming and heat treatment, the pipe blank is drawn through a die at ambient temperature. This process refines the outer diameter, wall thickness, and roundness to meet precise specifications, making it ideal for nickel alloy pipe orders that require high dimensional stability.

What testing methods does MTSCO employ?

For Alloy 400 seamless pipes, MTSCO’s standard testing regimen includes visual inspection, dimensional checks, PMI (Positive Material Identification), UT (Ultrasonic Testing), ET (Eddy Current Testing), hydrostatic testing, mechanical property testing, and chemical composition analysis.

Visual and dimensional inspections verify that the surface condition, outer diameter, wall thickness, length, and end finish meet order specifications. PMI allows for rapid material grade verification, minimizing the risk of material mix-ups; UT and ET detect internal or surface defects; and hydrostatic testing validates the pipe's pressure-bearing capacity and sealing integrity.

Additionally, MTSCO can facilitate third-party inspections by agencies such as SGS, TÜV, or BV to meet specific project requirements. Upon completion of testing, we provide MTCs (Material Test Certificates), inspection records, and photographic documentation, offering customers clear quality assurance for receipt, installation, and project archiving.

Material Properties of Alloy 400

Alloy 400 (UNS N04400) is a nickel-copper alloy characterized by excellent corrosion resistance and stable mechanical properties. It performs exceptionally well in seawater, brine, and various acidic or alkaline environments, making it a preferred choice for marine service, chemical processing, and systems handling corrosive fluids.

FAQ

Q1: What is the size range for this seamless pipe? A1: The product size range is OD 8mm–711mm and WT 1mm–50mm; lengths can be confirmed based on order requirements. MTSCO can assist in matching various specifications according to the customer's MTO list.

Q2: Can the pipe length and end treatment be customized?

A2: Yes. MTSCO can provide various lengths and end treatments—such as plain ends or beveled ends—according to customer requirements to ensure ease of installation.

Q3: Can these be purchased together with pipe fittings and flanges?

A3: Yes. MTSCO can supply pipes, tubes, fittings, flanges, and plates together, allowing customers to consolidate material specifications, standards, packaging, and shipping arrangements.