Longteng welding wire was used on the Xuelong polar expedition ship

Industry introduction

Since the beginning of the new century, the economy of the world is steadily growing, the shipping industry is developing continuously and the global shipbuilding market shows a thriving momentum. With the complete industrial and scientific research system , stable fundamental of the industrial development and a long coastline, China has grand comparative advantages in the shipbuilding area. During the National Twelfth Five-Year Plan, the shipbuilding industry has been listed as a pillar industry of the national economy. After decades of development, the shipbuilding industry in China has significantly risen the share in the global shipbuilding market and become the world´s top three shipbuilding powers together with South Korea and Japan.

Product application

Shipbuilding section steel, the indispensable steel for shipbuilding and marine engineering, is widely applied to build bulk cargo ship, container ship, VLCC, cruise, warship and marine engineering platform. Shipbuilding section steel, the "reinforcement" which is welded on the deck, is widely applied to ship structure and plays a role in improving strength. In recent years, upsizing trend of ships becomes more and more obvious and the demand for Shipbuilding section steel also shows upsizing trend.

Steel ingot is applied to various forged parts for ships such as rudder stock, intermediate shaft, large hook and rudder pintle for ships. It has obtained Classification Society Certificates of Nine Countries;

Steel ingot is applied to various forged parts for ships such as piston head, piston rod and cylinder cover of diesel engines at medium and low speeds.

Technical Research and Development

● Adopt several pass of special-shaped high pressure water descaling technology, meeting requirements of technical specifications for international shipbuilding industry PSPC

● Specialized TMCP rolling technology is applied with ease to control final rolling temperature below austenite recrystallization temperature steadily and optimize toughness of finished product comprehensively

● Dual straightening + powerful straightening become perfect gradually, guaranteeing straightness of each Shipbuilding section steel below 1‰ and achieving advanced international level

● NJB400 flat-bulb steels substitute clients' imported products, with advanced technology and high-end process approved in an all-round way

● Smart detection system for Shipbuilding section steel is developed independently, realizing whole process monitor and management of section steel quality and manufacturing comprehensively

Honor and Qualification

Our shipbuilding section steel series products for ships are honored with "Jiangsu High-technology Product", "Jiangsu Top Brand Product" and other titles, and approval certificates from CCS, ABS, VL, LR, BV, RINA, NK, KR and RS Classification Society. 

Partners

● Launch technical breakthrough type cooperative projects with Science and Engineering College of Jiangsu University of Science and Technology and East China Branch of Central Iron & Steel Research Institute

● Research and develop steel for deep sea oil well and platform with Korea DAEWOO, SANY HEAVY INDUSTRY and CSIC jointly