Ensuring Safety at Sub-Zero: TOBO Low Temperature Steel Pipe | ASME

Product Introduction

Overview
TOBO Low Temperature Steel Pipes are precision-engineered to deliver unmatched safety and reliability in environments where temperatures plummet far below freezing. Manufactured in full accordance with stringent ASME standards, these pipes are crafted from specially formulated steels that undergo controlled thermal processing to achieve a fine-grained microstructure. This critical engineering focus ensures they retain high impact toughness and ductility, effectively resisting brittle fracture when exposed to cryogenic temperatures. As an essential component for the safe handling of liquefied gases and operation in cold climates, they provide foundational integrity for critical infrastructure in the energy and chemical sectors.

1. Product Description
This product line consists of seamless or welded carbon and carbon-manganese steel pipes specifically designed for sub-zero applications. The key differentiator is their metallurgical design, which guarantees superior notch toughness at designated low temperatures. TOBO's manufacturing process includes precise normalization heat treatment, which refines the steel's grain structure—the fundamental factor in preventing catastrophic brittle failure in cold service. Our pipes are produced under dedicated low-temperature specifications, ensuring consistent performance where ordinary steel would fail.

2. Key Specifications

• Governing Standards: Primarily compliant with ASTM A333/A333M for seamless and welded pipes, and ASTM A671 for EFW pipes, all recognized by ASME.

• Standard Grades & Temperature Ratings: 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), and Grade 10 (-320°F / -196°C).

• Mandatory Testing: Each heat and pipe size is subjected to Charpy V-Notch (CVN) impact testing at or below the minimum design temperature to verify toughness.

• Dimensional Compliance: Manufactured to ASME B36.10M for seamless integration into piping systems.

• Size Availability: Offered in a wide range from NPS 1/8" to 36" to meet diverse project scopes.

3. Application
These pipes are specified for critical services involving low-temperature process media or cold environments:

• Liquefied Natural Gas (LNG) Value Chain: From liquefaction trains and storage tank piping to loading arms and regasification facilities.

• Industrial Gas Production: For the transmission of liquid oxygen, nitrogen, argon, and CO2 in air separation plants.

• Petrochemical Processing: In ethylene and propylene plants, and for handling other liquefied hydrocarbon gases.

• Refrigeration Systems: Serving as the main piping for large-scale industrial refrigeration and cold storage warehouses.

• Offshore & Arctic Projects: For process, utility, and export lines on platforms and pipelines operating in frigid climates.

4. Key Advantages

• Certified Fracture Resistance: The primary advantage is a guaranteed, tested resistance to brittle fracture at the specified design temperature, a non-negotiable safety requirement.

• Optimized Cost-Safety Balance: Provides the necessary mechanical performance for cryogenic service at a significantly lower material cost than high-alloy alternatives like stainless steel.

• Excellent Fabricability: Despite their specialized properties, they maintain good weldability and can be formed using qualified procedures suitable for low-temperature service.

• Proven Track Record: Built on decades of established material science and standards, offering engineers a trusted and predictable solution.

• Full Material Traceability: Supplied with comprehensive Mill Test Reports (MTRs) including chemical analysis, mechanical properties, and actual impact test results.

5. Function
The fundamental function of TOBO Low Temperature Steel Pipes is to act as a safe, high-integrity pressure boundary that maintains its containment capability under extreme thermal stress. They are engineered to absorb energy and resist crack initiation and propagation when subjected to operational pressures, mechanical shocks, or thermal contractions at low temperatures. By ensuring ductile behavior instead of brittle failure, they protect personnel, prevent the catastrophic release of hazardous cryogenic fluids, and safeguard the continuity and safety of entire process plants.

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