Plane machining method and plane machining program section (middle)

Here is a refined and improved version of the provided content in English, written as if it were a real-time market update with additional context to reach over 500 characters: --- **Steel Market Update – April 2025** Below is the latest steel price list, including general lines, rebar, hot rolled coils, cold rolled plates, and other steel products. Prices are listed in Yuan per ton, with changes compared to yesterday, last month, and three months ago. **General Lines:** - Φ6.5mm Q235 Xifeng: ¥5,180 (-50/-200/-360) - Φ6.5mm Q235 Yi Steel: ¥5,200 (-30/-180/-340) - Φ6.5mm Q235 Yong Steel: ¥5,300 (-50/-200/-500) **High Line Products:** - Φ6.5mm Q335 Haixin: ¥5,200 (-100/-250/-600) - Φ8mm Q335 Ping Steel: ¥5,200 (-100/-250/-600) **Rebar (HRB335):** - Φ10mm Sha Steel: ¥5,360 (-90/-170/-310) - Φ12mm Sha Steel: ¥5,280 (-40/-120/-210) - Φ16–25mm Sha Steel: ¥5,260 (-40/-90/-210) - Φ16–25mm Jiyuan: ¥5,020 (-40/-130/-210) **Grade III Rebar (HRB400):** - Φ12mm Horse Steel: ¥5,350 (0/-100/-250) - Φ16–25mm Ma Steel: ¥5,200 (0/-100/-300) **Hot Rolled Coils:** - 2.75mm*1250*C Q235: ¥6,230 (0/-20/+80) - 3.0mm*1500*C Angang: ¥5,850 (0/-190/-190) **Cold Rolled Plates:** - 1.0mm*1250*2500 SPCC Angang: ¥6,500 (-150/-330/-670) - 1.0mm*1250*2500 ST12 Wuhan Iron & Steel: ¥6,400 (-100/-250/-700) **Medium Plate:** - 20mm Q235B Xicheng: ¥5,670 (-30/-130/-380) - 8mm Q235A New Magang: ¥6,950 (-100/-150/-250) **Specialty Plates:** - 8mm Q345 New Steel: ¥7,200 (0/-100/-130) - 8mm 20g Xinyu Boiler Plate: ¥7,990 (0/0/0) **Seamless Tubes:** - 133*4.5 20# Hongdu: ¥7,050 (0/0/-400) **Structural Steel:** - I-beam 36#/b Q235 Laigang: ¥5,930 (0/0/-20) - Channel Steel 16#a Q235 Ma Steel: ¥5,410 (0/-70/-220) **Galvanized & Color Coils:** - 0.6mm*1000*C ST02Z Bengang: ¥7,500 (0/0/-400) - 0.40mm*1000*C SGCC Yellowstone Dongshan: ¥8,150 (0/0/-200) This update reflects current market conditions and price fluctuations across various steel products. Prices may vary depending on region and supplier. Please consult local dealers for the most accurate and up-to-date pricing. --- Let me know if you'd like this formatted for a specific platform or audience.

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