ASTM A269 Stainless Steel 316L welded straight tubing Capillary Tube

ASTM A269 Stainless Steel 316L Welded Straight Tubing Capillary Tube

What Makes MTSCO Your Trusted "Factory Complex" Partner?

MTSCO is a globally leading provider of metal material solutions. Through strategic partnerships like Siri Tubing, we have established a comprehensive supply chain system covering stainless steel, nickel alloys, and other materials. As MTSCO's specialized production base for welded tubes, Siri Tubing delivers highly reliable products for demanding environments. By adopting an “factory complex” model, we ensure every stage—from raw materials to finished products—operates under MTSCO's integrated management system, providing you with cost-effective solutions and full traceability for peace of mind.

Critical Product Inspection To Ensure Undamaged Delivery

Siri Tubing has established a comprehensive quality control mechanism throughout the entire production process. We conduct rigorous inspections starting from raw material and implement multi-point monitoring during manufacturing. Each tube undergoes 100% pressure testing and eddy current test to ensure structural integrity. We utilize PMI test to verify consistent material composition and employ X-ray testing to assess internal structure. Our laboratory conducts mechanical property testing on finished products, including critical metrics such as tensile strength and flattening resistance. All inspection data is fully traceable, guaranteeing complete compliance with international standards and customized client requirements.

How Do We Guarantee Every Tube Can Withstand Pressure?

Hydrostat testing is a mandatory procedure to verify the integrity and safety of tube products under pressure. Per standards (e.g., ASTM A269 requirements), tubes must withstand pressure at least a specified percentage of their minimum yield strength and maintain pressure for no less than 5 seconds to detect leaks or permanent deformation. This serves as a critical safety checkpoint before product delivery. MTSCO's testing laboratory is equipped with advanced hydrostatic testing machines. For every batch of ASTM A269 316L welded tube, regardless of diameter, we rigorously perform this test and maintain complete test records. This ensures every meter of tube delivered to you withstands pressure challenges, guaranteeing safety and peace of mind.

316L Welded Tube Specifications 

Key Physical Properties at a Glance

What’s Inside Your Tube? Exact Composition Matters

 FAQ

Q1: What is the difference between ASTM A269 316L and ASTM A213 TP316L? Which standard should be primarily referenced?

A1: A269 typically applies to general-purpose austenitic stainless steel seamless and welded tubes, while A213 is specifically for seamless tubes used in boilers, superheaters, and heat exchangers. For welded 316L capillary tubes or straight tubes, A269 is the more universal and commonly used procurement standard.

Q2: Can you provide custom cutting services beyond standard lengths?

A2: Yes. MTSCO offers flexible custom cutting services. You may specify exact lengths per project requirements. Our specialized cutting equipment ensures clean, burr-free edges with end protection, enabling direct installation to reduce on-site processing costs and time.

Q3: Can you supply material compliant with NACE MR0175/ISO 15156 standards for acidic environments?

A3: Yes. Standard 316L performs well in mildly acidic environments. For harsh acidic oil and gas environments (H₂S), we provide 316L products with special heat treatment (e.g., solution annealing + water quenching) and controlled hardness (typically HRC ≤ 22) to meet NACE requirements. MTSCO can customize production and testing according to your technical specifications.