ASME VIII DIV-1 Heat Exchanger Precision Engineered from SA-316L Stainless Steel
This comprehensive procurement package (PR No.: 27/10/PR-2026) is specifically tailored for the fabrication, maintenance, and overhaul of Heat Exchanger E1501 (Job No.: 26-CE-060). Every part is manufactured to stringent international standards including ASME, ASTM, and EN, ensuring perfect compatibility, leak-free operation, and extended service life in corrosive environments.
1. Premium Material Selection: SA-316L & SS304
All wetted parts and structural components are fabricated from SA-182 Gr.F316L, SA-312 TP316L, or SA-213 TP316L – ultra-low carbon stainless steels renowned for exceptional resistance to pitting, crevice corrosion, and intergranular attack.
2. Custom-Machined Flanges & Tubesheets
Two custom flanges (32mm thick, OD 640 * ID 468mm) serving as girth flanges for shell-to-channel joints.
Two tubesheets (32mm thick, OD 640mm), one for the top tank and one for the bottom tank, designed to securely hold 250 heat exchanger tubes in a precise pitch pattern.
All four components are machined from solid SA-182 F316L plates, ensuring uniform grain structure and pressure-retaining capability. The gasket contact surfaces are finished to 125~250 AARH (Smooth Finish), guaranteeing a tight, reliable seal under operating pressure and temperature fluctuations.
3. Standardized Slip-On Flanges & Seamless Pipes
For nozzle connections and auxiliary piping, the kit includes:
2 * DN150 (6") Slip-On Flanges (ID 170.5mm, 7.24 kg each)
1 * DN80 (3") Slip-On Flange (ID 90.5mm, 3.78 kg)
1 * DN50 (2") Slip-On Flange (ID 61.5mm, 2.39 kg)
All flanges conform to EN 1092-1/01/B1, PN16, Raised Face (RF), ensuring compatibility with European standard piping systems.
Paired with the flanges are three pieces of seamless stainless steel pipes (SCH.40, ASME B36.19):
1 * 6" (0.5m, 11.3 kg)
1 * 3" (0.5m, 1.13 kg)
1 * 2" (0.5m, 0.54 kg)
These short-length pipes are ready for welding to nozzles, minimizing on-site fabrication time.
4. High-Efficiency Heat Exchanger Tubes
The thermal transfer capability of E1501 relies on 250 pieces of seamless heat exchanger tubes. Each tube measures OD 19.05mm * 1.65mm wall thickness (minimum), made from SA-213 Gr TP316L, and cut to 2.5 meters in length. With a total weight of 900 kg, these tubes offer excellent thermal conductivity, superior corrosion resistance, and mechanical strength to withstand differential pressures and thermal cycling.
5. Complete Fastening System
A full set of high-strength fasteners is included for assembly:
56 sets of Stud Bolts (M27 * 130mm) with 2 heavy hex nuts and 2 washers per set, made from SA193 B8ML / SA194 8ML. These are used for main flange connections.
4 sets of Hex Bolts (M20 * 120mm) with hex nuts, SS304, for structural attachments.
5 sets of Tie Rods (M10 * 2070mm) and 1 set (M10 * 1920mm) with nuts, SA-276 316L / SA-194 8ML, used for internal bundle alignment or support.
8 sets of small screws (M4 * 15mm, SS304) for instrument or accessory mounting.
All fasteners are supplied with proper coating and packaging to prevent galling and corrosion during storage and installation.
6. Quality Assurance & Documentation
A.M.I Engineering guarantees that all materials comply with the specified ASTM/ASME grades and EN standards. EN 10204 Type 3.1 mill certificates will be provided for each material batch, ensuring full traceability from melt to finished product. Dimensional inspection reports and surface roughness verification (125~250 AARH on sealing faces) are available upon request.
