TOBO Low-Temperature Carbon Steel Pipes for Cryogenic Service | ASME Compliant

TOBO Low-Temperature Carbon Steel Pipes for Cryogenic Service | ASME Compliant

Product Introduction

Overview

TOBO Low Temperature Steel Pipes are professionally designed to offer outstanding safety and stability in ultra-low temperature environments. Produced in strict compliance with rigorous ASME standards, these pipes are made from specially developed steel materials through controlled heat treatment to obtain a fine-grained microstructure. This key design ensures the pipes maintain high impact toughness and ductility, effectively preventing brittle fracture under cryogenic conditions. As a critical component for the safe transportation of liquefied gases and cold-region operations, they provide reliable structural support for key infrastructure in the energy and chemical industries.

1. Product Description

This series includes seamless and welded carbon steel / carbon-manganese steel pipes, specially developed for sub-zero working conditions. Their core advantage lies in the professional metallurgical design, which ensures excellent notch toughness at the rated low temperatures. TOBO’s production process adopts precise normalizing heat treatment to refine the grain structure, which is essential to avoid sudden brittle failure in low-temperature service. All pipes are manufactured in accordance with special low-temperature specifications, delivering stable performance where ordinary steel materials cannot be applied.

2. Key Specifications

• Standards: Mainly conform to ASTM A333/A333M (seamless & welded) and ASTM A671 (EFW pipes), both recognized by ASME.

• Grades & Temperature Ranges: Grade 1 (-50°F / -45°C), Grade 6 (-50°F / -45°C), Grade 3 (-150°F / -100°C), Grade 7 (-100°F / -75°C), Grade 9 (-150°F / -100°C), Grade 10 (-320°F / -196°C).

• Mandatory Tests: Each batch and size undergoes Charpy V-Notch (CVN) impact testing at or below the design temperature to confirm toughness performance.

• Dimensions: Comply with ASME B36.10M for easy system assembly.

• Sizes: Available in a full range from NPS 1/8" to 36", adaptable to various project requirements.

3. Application

These pipes are widely used in key projects involving low-temperature media or frigid environments:

LNG Industry: Liquefaction plants, storage tanks, loading arm systems and regasification facilities.

• Industrial Gas: Liquid oxygen, nitrogen, argon and CO₂ transmission in air separation units.

• Petrochemical: Ethylene, propylene and other liquefied hydrocarbon processing units.

• Refrigeration: Large industrial refrigeration systems and cold storage warehouse pipelines.

• Offshore & Arctic: Process pipelines, public utility lines and export pipelines in frigid zone platforms.

4. Key Advantages

• Certified Anti-Fracture Performance: Tested and verified resistance to brittle fracture at rated low temperatures, meeting strict safety requirements.

• Optimized Cost & Safety: Provides qualified low-temperature mechanical properties at a much lower cost than high-alloy materials such as stainless steel.

• Good Processability: With favorable weldability and formability, suitable for standard low-temperature construction procedures.

• Proven Reliability: Supported by mature material technology and international standards, a trusted solution for engineering design.

• Complete Material Traceability: Supplied with full Mill Test Reports (MTR), including chemical composition, mechanical properties and actual impact test data.

5. Function

The core function of TOBO Low Temperature Steel Pipes is to serve as a safe, high-strength pressure-retaining component, maintaining stable sealing performance under extreme low-temperature stress. They are designed to absorb impact energy and inhibit crack generation and expansion under working pressure, mechanical shock or thermal shrinkage at low temperatures. By ensuring ductile fracture instead of brittle failure, they protect personnel safety, avoid hazardous cryogenic medium leakage, and guarantee the stable and safe operation of the whole process system.

Payment & Invoicing

1. First-Time Clients: 50% advance payment, 50% balance before shipment.
2. Strategic Clients: 30% advance, 70% payment against copy of Bill of Lading.
3. Long-Term Agreements: 60-day credit terms available (subject to credit approval).
4. Invoicing: 13% VAT Special Invoice provided; FORM A Certificate of Origin for exports.
5. fication System: Laser marking includes material code, pressure rating, and flow direction arrows.

   
   
   FAQ

   1. Are you trading company or manufacturer ?
   We are manufacturer ,You can see the Alibaba certification.
   2. How long is your delivery time?
   Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
   3. Do you provide samples ? is it free or extra ?
   Yes, we could offer the sample for free charge but need pay the cost of freight.
   4. What is your terms of payment ?
   Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment