High-durability Carbon Steel Pipe (Paip Besi Hitam) designed for structural integrity and pressure-resistant applications. Ideal for scaffolding, gas transport, and firefighting systems with reliable welding capabilities.
PRODUCT DESCRIPTION
Quick Specs
KEY TECHNICAL FEATURES
APPLICATIONS & BENEFITS
TECHNICAL SPECIFICATIONS TABLE
| Specification | Technical Detail |
| Compliance | Industry Standard Compliant |
| Material Grade | High-Grade Carbon Steel (Besi Karbon Gred Tinggi) |
| Structural Category | High-Tensile Structural Steel (Besi Tahan Lasak) |
| Dimensions & Sizes | Available in Standard Schedule Wall Thicknesses |
| Finish / Coating | Natural Lacquered Finish (Oil-Coating for Temporary Rust Protection) |
| Connection Type | Plain End / Beveled / Threaded & Coupled |
| Corrosion Resistance | Corrosion Resistant (With appropriate secondary coating) |
| Weldability | Superior Weldability (Optimized for High-Integrity Welding) |

Welded Steel Pipe – Class Medium
|
||||||||
Nominal Size |
Outside Diameter |
Wall Thickness |
Calculated Weight |
|||||
Max |
Min |
Plain Ends |
Threads and Coupling |
|||||
mm |
in |
mm |
mm |
mm |
Kg/m |
Kg/m |
Kg/m |
Kg/m |
15 |
1/2 |
21.7 |
21.1 |
2.6 |
1.21 |
0.369 |
1.22 |
0.372 |
20 |
3/4 |
27.2 |
26.6 |
2.6 |
1.56 |
0.475 |
1.57 |
0.479 |
25 |
1 |
34.2 |
33.24 |
3.2 |
2.41 |
0.735 |
2.43 |
0.741 |
32 |
1 1/4 |
42.9 |
42.1 |
3.2 |
3.10 |
0.945 |
3.13 |
0.954 |
40 |
1 1/2 |
48.8 |
48.0 |
3.2 |
3.57 |
1.09 |
3.61 |
1.10 |
50 |
2 |
60.8 |
59.8 |
3.6 |
5.03 |
1.53 |
5.10 |
1.55 |
65 |
2 1/2 |
76.6 |
75.4 |
3.6 |
6.43 |
1.96 |
6.55 |
2.00 |
80 |
3 |
89.5 |
88.1 |
4.0 |
8.37 |
2.55 |
8.54 |
2.60 |
100 |
4 |
114.9 |
113.3 |
4.5 |
12.2 |
3.72 |
12.5 |
3.81 |
125 |
5 |
140.6 |
138.7 |
5.0 |
16.6 |
5.06 |
17.1 |
5.21 |
150 |
6 |
166.1 |
164.1 |
5.0 |
19.7 |
6.0 |
20.3 |
6.19 |
Welded Steel Pipe – Class Heavy
|
||||||||
Nominal Size |
Outside Diameter |
Wall Thickness |
Calculated Weight |
|||||
Max |
Min |
Plain Ends |
Threads and Coupling |
|||||
mm |
in |
mm |
mm |
mm |
Kg/m |
Kg/m |
Kg/m |
Kg/m |
15 |
1/2 |
21.7 |
21.1 |
3.2 |
1.44 |
0.439 |
1.45 |
0.442 |
20 |
3/4 |
27.2 |
26.6 |
3.2 |
1.87 |
0.570 |
1.88 |
0.573 |
25 |
1 |
34.2 |
33.24 |
4.0 |
2.94 |
0.896 |
2.96 |
0.902 |
32 |
1 1/4 |
42.9 |
42.1 |
4.0 |
3.80 |
1.16 |
3.83 |
0.954 |
40 |
1 1/2 |
48.8 |
48.0 |
4.0 |
4.38 |
1.34 |
4.42 |
1.35 |
50 |
2 |
60.8 |
59.8 |
4.5 |
6.19 |
1.89 |
6.26 |
1.91 |
65 |
2 1/2 |
76.6 |
75.4 |
4.5 |
7.93 |
2.42 |
8.05 |
2.45 |
80 |
3 |
89.5 |
88.1 |
5.0 |
10.3 |
3.14 |
10.5 |
3.20 |
100 |
4 |
114.9 |
113.3 |
5.4 |
14.5 |
4.42 |
14.8 |
4.51 |
125 |
5 |
140.6 |
138.7 |
5.4 |
17.9 |
5.46 |
18.4 |
5.61 |
150 |
6 |
166.1 |
164.1 |
5.4 |
21.3 |
6.49 |
21.9 |
6.68 |
QUESTION 1: What is the recommended black pipe for industrial gas lines in Selangor factories?
ANSWER 1: For industrial gas conveyance, Kee Maju Jaya recommends our high-tensile Black Pipe (Besi Paip Hitam). Its non-galvanized surface prevents chemical reactions with the gas, ensuring safe, high-pressure transport compliant with industrial standards.
QUESTION 2: How does Black Pipe perform in high-humidity environments like coastal Terengganu?
ANSWER 2: While Black Pipe is susceptible to surface oxidation, it is often preferred for structural skeletons that will be painted or coated on-site. For coastal projects, we recommend a protective secondary coating to maintain its structural integrity against salt-air corrosion.
QUESTION 3: Can Besi Paip Hitam be used for structural scaffolding in JKR-spec projects?
ANSWER 3: Yes, our Black Pipe is engineered for high-load structural framing. Its weldability and tensile strength make it a staple for scaffolding and temporary supports in JKR-compliant infrastructure projects across Malaysia.
QUESTION 4: Why choose Black Pipe over Galvanized Pipe for fire protection systems?
ANSWER 4: Black Pipe is the standard for fire sprinkler systems because it is more cost-effective for large-scale projects and offers high heat resistance without the risk of the zinc coating peeling off and clogging the sprinkler heads.
SOALAN 1: Apakah paip hitam yang disyorkan untuk talian gas industri di kilang-kilang sekitar Selangor?
JAWAPAN 1: Untuk penyaluran gas industri, Kee Maju Jaya mengesyorkan Black Pipe (Besi Paip Hitam) gred tinggi kami. Permukaan tanpa galvani menghalang tindak balas kimia dengan gas, sekaligus menjamin penghantaran tekanan tinggi yang selamat dan patuh standard industri.
SOALAN 2: Bagaimanakah prestasi Besi Paip Hitam di kawasan kelembapan tinggi seperti pesisir pantai Terengganu?
JAWAPAN 2: Walaupun Besi Paip Hitam terdedah kepada pengoksidaan permukaan, ia sering dipilih untuk rangka struktur yang akan dicat atau disalut di tapak bina. Untuk projek pesisir pantai, kami mengesyorkan salutan pelindung sekunder bagi mengekalkan integriti struktur daripada kakisan udara masin.
SOALAN 3: Bolehkah Besi Paip Hitam digunakan untuk perancah (scaffolding) struktur dalam projek spesifikasi JKR?
JAWAPAN 3: Ya, Besi Paip Hitam kami direka khusus untuk rangka struktur beban tinggi. Kebolehkimpalan dan kekuatan tensilnya menjadikannya pilihan utama untuk perancah dan sokongan sementara dalam projek infrastruktur patuh JKR di seluruh Malaysia.
SOALAN 4: Mengapakah perlu memilih Besi Paip Hitam berbanding Paip Galvani untuk sistem perlindungan kebakaran?
JAWAPAN 4: Besi Paip Hitam adalah standard untuk sistem pancutan air (sprinkler) kerana ia lebih kos efektif untuk projek berskala besar dan menawarkan rintangan haba tinggi tanpa risiko salutan zink mengelupas yang boleh menyumbat kepala pancutan.
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