DN na NPS ni nini katika upimaji wa mabomba?

DN (Diamètre Nominal) is the metric designation, NPS (Nominal Pipe Size) is the imperial equivalent. They are not direct diameter measurements but nominal identifiers. For example, DN 50 = NPS 2 = 60.3 mm OD.

Jedwali la bomba linamaanisha nini?

Schedule (Sch) defines the wall thickness for a given pipe OD. Higher schedule = thicker wall = higher pressure rating. Common schedules: 10 (thin), 40 (standard), 80 (extra strong), 160 and XXS for high pressure.

Tofauti kati ya ISO 4200 na ASME B36.10 ni nini?

Zote mbili zinaelezea vipimo vya mabomba ya chuma. ISO 4200 ni kiwango cha kimataifa, ASME B36.10 ni kiwango cha Marekani. Thamani za OD ni sawa kwa kuwa zinatoka chanzo kimoja. Unene wa ukuta kwa majadwali ya kawaida unafanana katika viwango vyote viwili.

Ninavyohesabuje uzito wa bomba kwa mita?

Weight per meter = π × (OD − t) × t × ρ / 1000, where OD and t are in mm, and ρ for steel ≈ 7850 kg/m³. This gives weight in kg/m.

OD ya kawaida ya bomba la DN 100 ni nini?

DN 100 (NPS 4) has an OD of 114.3 mm. Wall thickness depends on schedule: Sch 10 = 3.05 mm, Sch 40 = 6.02 mm, Sch 80 = 8.56 mm.

Zana ya Uhandisi ya Bure — #149

Vipimo vya Bomba la Chuma — ISO 4200

Tafuta kipenyo cha nje, unene wa ukuta, kipenyo cha ndani, na uzito kwa mita kwa ukubwa wa kawaida wa bomba la chuma. Chagua DN au NPS na ratiba.

ISO 4200ASME B36.10Sch 10/40/80

Pipe Data

Selected Pipe

—

Schedule	OD (mm)	Wall (mm)	ID (mm)	Weight (kg/m)

Mfumo wa Uzito wa Bomba

OD — kipenyo cha nje (mm)
t — unene wa ukuta (mm)
ρ — steel density ≈ 7850 kg/m³

Ratiba dhidi ya Darasa la Shinikizo

Schedule number ≈ 1000 × P/S, where P is internal pressure (psi) and S is allowable stress (psi). Higher schedules handle higher pressures. Sch 40 is the most common for general service.

⚠️ Note: Daima thibitisha vipimo vya bomba kutoka kwa data ya mtengenezaji kwa matumizi muhimu. Uvumilivu kulingana na ISO 4200 na ASME B36.10 unatumika.