1.
Corrosion Inhibition of 20 Carbon Steel in Hydrochloric Acidic Solution by Several Surfactants
盐酸介质中5种表面活性剂对20碳钢的缓蚀作用
2.
The materials of semicircle seamless steel tube can fall into carbon steel (20#) and stainless steel (321).
半圆无缝管材质有碳钢（20#钢）和不锈钢（321钢）。
3.
Research of Improving the Guality of the Fine Guality Carbon Structural 20# Steel Plate.;
提高优质碳素结构钢(20#)钢板质量的研究
4.
cold-rolled carbon steel
冷轧碳钢, 低碳钢
5.
High-carbon steels are called "hard".
高碳钢叫做“硬钢”。
6.
Wwlding material: low carbon steel, high strength steel, medium carbon steel, low alloy steel.
可焊接材料：低碳钢、强度钢、碳钢、合金钢。
7.
Of course I know. according to the amount of the carbon content, carbon steels can be divided into low-carbon steel, medium-carbon steel and high--carbon steel.
根据碳元素的含量，碳素钢可再分为低碳钢、中碳钢和高碳钢。
8.
carbon and low-alloy steel vessels
碳钢及低合金钢容器
9.
Weldable materials: low carbon steel , high-strength steel ,medium-carbon steel, low-alloy steel.
可焊材料：低碳钢、高强度钢、中碳钢，低合金钢。
10.
All carbon steel body ball valves come with carbon steel handles.
所有碳钢阀体球阀都配置碳钢手柄。
11.
Structural steels can be subdivided into constructional steel and machinery steel. Low-carbon steel is often used as constructional steel, and low-carbon and edium-carbon steels are often used as machinery steel.
结构钢还可分为建筑用钢和机械用钢。低碳钢常用作建筑用钢，机械用钢一般是低碳钢和中碳钢。
12.
Medium-carbon and high-carbon steels are often used as tool steel. Tool steels include carbon tool steel, alloy tool steel and high-speed tool steel.
中碳钢和高碳钢常用作工具钢。工具钢包括碳素工具钢、合金工具钢和高速工具钢。
13.
a steel that contains 0.9% carbon (the eutectic point in the iron-carbon system); a carbon steel with 0.9% carbon is pure pearlite.
含%碳的钢（铁碳混合物的低共熔点），含%碳的碳钢是纯珠光体。
14.
We smell more than sixty kinds of steel here, such as low alloy steel, carbon structural steel and shipbuilding carbon steel.
这儿冶炼六十多种钢，如低合金钢、碳素结构钢和船用碳素钢等。
15.
Carbon spring steel wires
GB/T4357-1989碳素弹簧钢丝
16.
Carbon tool steel wires
GB/T5952-1986碳素工具钢丝
17.
low carbon electrical steel and Armco iron
低碳电工钢和阿姆科铁
18.
Carbon Steel Wire Rods for Cold Heading & Cold Forging
冷冲及冷锻用碳钢线枝