7 sentences

1. 工人们正在车间里轧钢。

   gōng​rén men zhèng​zài chē​jiān lǐ zhá gāng.

   Workers are rolling steel in the workshop.

   Source: Dong Chinese Dictionary

2. 这把小刀是用钢制成的。

   zhè bǎ xiǎo​dāo shì yòng gāng zhì​chéng de.

   This knife is made of steel.

   Source: Dong Chinese Dictionary

3. 猎人举起钢叉，猛地向野兽刺去。

   liè​rén jǔ​qǐ gāng chā, měng​de xiàng yě​shòu cì qù.

   The hunter raised his steel fork and thrust it fiercely at the beast.

   Source: Dong Chinese Dictionary

4. 工程师正在研究大桥的钢结构。

   gōng​chéng​shī zhèng​zài yán​jiū dà​qiáo de gāng jié​gòu.

   Engineers are studying the steel structure of the bridge.

   Source: Dong Chinese Dictionary

5. 工人正在铁路上检查锈蚀的钢轨。

   gōng​rén zhèng​zài tiě​lù shàng jiǎn​chá xiù​shí de gāng guǐ.

   A worker is inspecting rusty steel rails on the railway.

   Source: Dong Chinese Dictionary

6. 这种钢坯是制造零件的基础材料。

   zhè zhǒng gāng pī shì zhì​zào líng​jiàn de jī​chǔ cái​liào.

   This kind of steel billet is a basic material for manufacturing parts.

   Source: Dong Chinese Dictionary

7. 钼被广泛用于制造高强度钢合金。

   mù bèi guǎng​fàn yòng​yú zhì​zào gāo qiáng​dù gāng hé​jīn.

   Molybdenum is widely used to manufacture high-strength steel alloys.

   Source: Dong Chinese Dictionary