Seiring berkembangnya perekonomian Indonesia menjadi lebih baik dan kompetitif, seiring itu pula pasar dan pelanggan industri konstruksi di Indonesia juga meningkat. Untuk merespon hal tersebut, PT. Bukit Terang Paksi Galvanizing akhirnya dibentuk di awal tahun 1997 untuk memenuhi kebutuhan akan layanan Galvinizing. Dengan pengalaman yang sudah terbukti, teknologi maju, serta komitmen tinggi, PT. Bukit Terang Paksi Galvanizing adalah salah satu aset milik Indonesia yang tak tergantikan dalam bidang pengembangan industri.
Keuntungan Galvanizing:
- Baja Galvanized bebas perawatan untuk beberapa tahun
- Dilihat dari sisi ekonomi, harga awal Galvanizing jauh lebih murah dibandingkan dengan biaya perawatan berkala struktur baja
- Komponen baja Galvanized lebih muda digunakan dan diproses (Bisa dibor, dipotong, dilas, atau diwarnai)
- Pembersihan dengan kimia agar permukaan terjamin kebersihannya
- Terdapat lapisan Hot Dip Galvanizing yang melapisi semua permukaan bagian luar dan dalam serta bagian tepid an daerah yang sulit dijangkau
- Lapisan Hot Dip Galvanizing ini lebih kuat dibandingkan baja halus, mudah dikendalikan, dan dipasang
- Lapisan Hot Dip Galvanizing melindungi semua besi secara katodik terhadap segala benturan dan lecet
Hot Dip Galvanizing is a thermal process of coating steel products with a layer of zinc. Through this process, steel can become stronger and corrosion resistant, thus requiring less maintenance over the life of the products. Galvanizing offers steel products resistance to impact and abrasion, whilst providing cathodic protection. Because of this galvanizing is essential for the maintenance of steel no matter what shape or size.
The galvanizing process is as follow:
- Hot caustic degreasing (removal of oil, organic materials and paint).
- Hydrochloric acid pickling (removal of rust and mill scale)
- Rinsing (removal of acid residues)
- Pre-fluxing in solution of zinc ammonium chloride (surface conditioning)
- Hot Dip Galvanizing (total immersion n molten zinc at 450 degrees Celsius)
Quenching (cooling and passivation of the zinc surface to prevent early oxidation).
ASTM A 123 - 00 (AMERICAN STANDARD)
| Material Category | All Specimens Tested Steel Thickness Range (Measured) |
||||
| < 1.6 | 1.6 to < 3.2 | 3.2 to 4.8 | > 4.8 to <6.4 | > 6.4 | |
| - Structural Shapes and Plate | 45 | 65 | 75 | 85 | 100 |
| - Strip and Bar | 45 | 65 | 75 | 85 | 100 |
| - Pipe and Tubing | 45 | 45 | 75 | 75 | 75 |
| - Wire | 35 | 50 | 60 | 65 | 80 |
BS EN ISO 1461:1999
| Article Thickness | Coating Mass (g/m2) |
Thickness (Microns) |
| - Steel > 6 mm | 610 | 85 |
| - Steel > 2 mm < 5 mm | 460 | 65 |
| - Steel > 1 mm < 2 mm | 335 | 47 |
| - Iron Castings | 610 | 85 |
| - Centrifuged | 605 | 43 |
ISO 1461 (INTERNATIONAL STANDARD), on samples that are not centrifuged:
| Article and it's Thickness | Local Coating (Minimum) | Mean Coating (Minimum) | ||
| g/m2 | µm | g/m2 | µm | |
| - Steel > 6 mm | 505 | 70 | 610 | 85 |
| - Steel > 3 mm < 6 mm | 395 | 55 | 505 | 70 |
| - Steel > 1.5 mm < 3 mm | 325 | 45 | 395 | 45 |
| - Steel < 1.5 | 250 | 35 | 325 | 45 |
| - Castings > 6 mm | 505 | 70 | 575 | 80 |
| - Castings < 6 mm | 430 | 60 | 505 | 70 |
ISO 1461 (INTERNATIONAL STANDARD), on samples that are centrifuged:
| Article and it's Thickness | Local Coating (Minimum) | Mean Coating (Minimum) | ||
| g/m2 | µm | g/m2 | µm | |
| Articles with treads | ||||
| - > 20 mm diameter | 325 | 45 | 395 | 55 |
| - > 6 mm to < 20 mm diameter | 250 | 35 | 325 | 45 |
| -1453532545 | ||||
| Other articles (incl.castings) | ||||
| - > 6 mm | 325 | 45 | 395 | 55 |
| - < 6 mm | 250 | 35 | 325 | 45 |
AS/NZS 4680:1999 (AUSTRALIAN / NEW ZEALAND STANDARD)
| Article and it's Thickness | Average Coating Mass Minimum g/m2 |
Local Coating Thickness Minimum (µm) |
Average Coating Thickness (µm) |
| - Steel3203545 | |||
| - Steel > 1.5 mm < 3 mm | 390 | 45 | 55 |
| - Steel > 3 mm < 6 mm | 500 | 55 | 70 |
| - Steel < 6 mm | 600 | 70 | 85 |
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