SPA-H weather resistance steels for containers
The container has strict requirements on the atmospheric corrosion resistance of steels. The largest consumption of containers' steel is a high value-added variety with relatively stable prices. With the growth of global trade volume, the demand for container steels in China have also been keeping a relatively high growth in recent years. Many main mills in China have adapted to the market demand and develop to produce hot-rolled wide-band steel for SPA-H containers. The developed product adopts a design with reasonable composition of Cu, P, Cr and Ni in low carbon steels. So The steel SPA-H has excellent corrosion resistance with accurate dimension, good surface and good formability performance, which satisfy the requirements of containers' steels better.
SPA-H is one grade of specification JISG3125 "Superior atmospheric corrosion resisting rolled steels"
Chemical Composition (%)
Tolerance of Thickness
The production process of SPA-H container steel is:
hot metal pretreatment -- 120 t top and bottom combined blowing converter smelting -- LF refining -- slab continuous casting (160 mm × (1 055 ~ 1 360) mm) -- hot delivery -- heating -- high pressure water descaling -- (E1, four rolls R1) reversible rough rolling 5 times -- hot coil box -- unwinding -- flying shear head and tail -- E2 before high pressure water descaling -- (E2, F1 ~ F6) finishing rolling Units -- laminar cooling -- coiling -- baling -- transportation -- spray number -- collection and stacking.
Usage of Weather Resistance Steesl:
Besides used for the containers' production, the SPA-H steels are also used for air preheater, economizer, railway carriage, bridge building , construction and so on.
Shanghai All-Win Steel Company always keep thousands tons of weather resistance steels in our warehouse with grade SPA-H, 09Cu, 05 Cu and so on. And we can offer the original widths in 1000mm, 1250mm, 1500mm, 2000mm etc., and we can also help to split or cut into different sizes accordingly.