ເບິ່ງ ສັງເກດ ການ by by 4130 Seamless Tubing in Contributions of Contributions of Contributions. Introduction to 4130 Seamless Tubing 2 Unis ໂປຣແກ້ໄຂ 4130 Seamless Tubing 2.1 ໂປຣແກ້ໄຂ ໂປຣແກຣມ ມັດທາຍ ກ່ຽວ ກັບ 3.1 ອໍານາດ ແລະ Durability 3.2 Corrosion Resistance 3.3 Lightweight and multiplatile 4