others (Sheets, tube sheets, round bars...)
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What Makes Our Stainless steel productsStand Out for you?
Every production step is carefully monitored, from raw material sourcing to final inspection, with complete traceability for each batch.
With more than three decades of expertise in stainless steel seamless pipes, DLSS has earned the trust of customers worldwide through consistent quality and reliable service.
Our products are trusted by customers across Europe, Southeast Asia, the Middle East, South America, and beyond, supporting well-known international brands.
DLSS is committed to helping customers succeed. We believe in sincere cooperation, mutual benefit, and long-term partnerships that grow together.
Product Cases
ASME SA213 TP304 Seamless Tube ∅25×1.0(min)×6000mm
ASME SA213 TP304 seamless tube, ∅25×1.0×6000mm, with 100% HT + 100% ET + 100% UT. Reliable stainless steel tube for heat exchangers, boilers, and condensers.
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ASME SB163 Incoloy 800HT (UNS N08811)
ASME SB163 Incoloy 800HT seamless pipe, 64×4.5×4000 mm, bright surface. Excellent high-temperature strength, oxidation resistance, and creep life. Comparison with Incoloy 800H and 825 included.
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ASTM B163 Incoloy 825 (UNS N08825)
ASTM B163 Incoloy 825 (UNS N08825) seamless tube, size 25.4×2.11×5555 mm. Bright annealed finish, excellent resistance to acids, seawater, and chlorides. Ideal for heat exchangers, condensers, and chemical processing.
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ASTM A403 WP321 SMLS 180° SR
ASTM A403 WP321 seamless 180° SR elbow, 88.9×3.05 mm minimum thickness. Titanium stabilized stainless steel bend with high-temperature and corrosion resistance for heat exchangers, boilers, and refineries.
Read MoreDifferentiated Services: Precisely Meeting Your Business Needs
for Stockists
for End Users
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Fast Delivery
Efficient production and on-time delivery for your orders
Multiple Product Options
A wide range of seamless tubes to meet various project needs
Small Batch Logo Customization
Custom logos for small batch orders, enhancing your brand identity
Regional Pricing & Protection
Exclusive regional rights and strategic pricing to strengthen your market position
Cost-Effective Products
High-quality products at competitive prices to boost your margins
Flexible MOQ
Adaptable minimum order quantities to fit your business requirements
One-Stop Marketing Solutions
Boost your online image with a complete suite of product marketing visuals and videos
Fastest 7-Day Production Process
Delivery can be made within a minimum of 7 days based on your order size
Continuously upgraded packaging
We offer continuously upgraded packaging to ensure maximum protection and efficiency.
DLSS’s Core Principle: Never Leaving Problems For Clients
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Company News
Comparing ASTM A213, A269, and A312
Introduction When sourcing stainless steel tubes, choosing the correct ASTM standard is critical for compliance, safety, and performance. Among the most commonly used specifications are: Each standard serves a specific purpose and comes with unique mechanical, dimensional, and testing requirements. This guide will help you understand the differences and select the right standard for your […]
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Stainless Steel Instrumentation Tubing for Japan’s
Introduction The oil and gas industry in Japan demands high-precision stainless steel instrumentation tubing for safe and efficient operation of control systems. DLSS supplies JIS G3446-compliant tubes with excellent corrosion resistance, precision dimensional tolerances, and long service life in harsh offshore and onshore environments. 1. Why Stainless Instrumentation Tubes for Oil & Gas（石油・ガスにステンレス計装チューブが必要な理由） 2. Standards […]
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316 vs 316L vs 316Ti Stainless
1. Overview In demanding industries such as heat exchangers, condensers, boilers, and pressure vessels, stainless steels of the 316 family are among the most widely used materials. However, choosing between 316, 316L, and 316Ti depends on factors like weldability, temperature stability, and corrosion resistance. At DLSS (Zhejiang Daling Special Steel Co., Ltd.), we supply all […]
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Heat Exchanger Tube Selection Guide for
Heat exchanger tubes are very important in petrochemical plants. They are used to transfer heat between fluids, gases, or process streams. They may work in high temperature, high pressure, and corrosive service. If the wrong tube material is selected, the result can be serious. It may cause: This guide explains how to select heat exchanger […]
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