{"id":6652,"date":"2026-11-02T04:32:42","date_gmt":"2026-11-02T04:32:42","guid":{"rendered":"https:\/\/www.ggsteelstruct.com\/?page_id=6652"},"modified":"2026-11-04T06:52:25","modified_gmt":"2026-11-04T06:52:25","slug":"structural-steel-fabrication","status":"publish","type":"page","link":"https:\/\/www.ggsteelstruct.com\/id\/services\/structural-steel-fabrication\/","title":{"rendered":"Fabrication to Drawings"},"content":{"rendered":"
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Beranda<\/a> \/ Layanan<\/a> \/ Fabrication to Drawings<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Layanan<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Structural steel fabricated to your drawings, with the risks named up front<\/h1>\t\t\t\t<\/div>\n\t\t\t\t
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You send IFC drawings and a specification. We detail, fabricate, test, coat and pack every member, and ship the records with it. This page covers what can go wrong in fabrication and how each risk is controlled.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tUnggah gambar<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tSee what we need<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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300.000 t<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Annual capacity, as published<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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8<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Bases in South China<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Q420GJC<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Thick plate, Zengcheng<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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40 t<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Single truss piece, Meihua<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tRuang lingkup<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tWhat we need<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tMember types<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tProses<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tCapabilities<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tWaktu tunggu<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tDrawing changes<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tSubcontracting<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tProyek<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tFAQ<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tGet a Quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Ruang lingkup<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Where our work starts and stops<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Item<\/th>GGSteel<\/th>You or your engineer<\/th><\/tr><\/thead>
Structural design and member sizes<\/th>\u2014<\/td>Insinyur pencatat<\/strong><\/td><\/tr>
Connection design<\/th>If delegated to us (see Engineering)<\/strong><\/td>Or fully shown on your drawings<\/td><\/tr>
Gambar kerja<\/th>GGSteel<\/strong><\/td>Review and approve<\/td><\/tr>
Material purchase and traceability<\/th>GGSteel<\/strong><\/td>\u2014<\/td><\/tr>
Fabrication, welding, NDT<\/th>GGSteel<\/strong><\/td>Witness at hold points<\/td><\/tr>
Pelapisan<\/th>GGSteel<\/strong><\/td>Specify the system<\/td><\/tr>
Packing, loading, export documents<\/th>GGSteel<\/strong><\/td>\u2014<\/td><\/tr>
Pemasangan<\/th>Optional<\/td>Your erector, or ours<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Inputs<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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What to send for a fixed price, and what happens if it is missing<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Input<\/th>If missing, we must assume<\/th>Price risk<\/th><\/tr><\/thead>
General arrangement and member schedule (DWG or IFC, not only PDF)<\/th>Dimensions scaled from PDF<\/td>Tinggi<\/td><\/tr>
Steel grades and impact test temperature<\/th>Q355B, +20 \u00b0C impact<\/td>Sedang<\/td><\/tr>
Through-thickness (Z) requirement for thick plates<\/th>Tidak ada<\/td>High on heavy nodes<\/td><\/tr>
Connection details or design forces<\/th>Standard connections, priced as estimate<\/td>Tinggi<\/td><\/tr>
Weld grade or execution class, NDT rate<\/th>GB weld grade 2, 20% UT<\/td>Sedang<\/td><\/tr>
Spesifikasi pelapisan dan perlindungan api<\/th>Primer only<\/td>Tinggi<\/td><\/tr>
Delivery zones and dates<\/th>One shipment<\/td>Rendah<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tFull RFQ checklist \u2192<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Member types<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Each member type has its own main risk<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Member<\/th>How we make it<\/th>Main risk<\/th>Control<\/th><\/tr><\/thead>
Welded H beams and columns<\/th>Plates cut, assembled on an H line, flange welds by SAW, straightened<\/td>Flange tilt, web buckling on thin webs<\/td>Roller straightening; tilt measured per member<\/td><\/tr>
Kolom kotak yang dilas<\/th>Four plates; internal diaphragms; corner welds by SAW; closing diaphragm welds by electroslag<\/td>Twist; diaphragm misplaced; lamellar tearing<\/td>Jig assembly, balanced welding, UT of plate and joints<\/td><\/tr>
Plate and transfer girders<\/th>Deep webs, stiffeners, cambered profile<\/td>Camber loss after welding<\/td>Camber cut into web; measured on the floor<\/td><\/tr>
Trusses and space frames<\/th>CNC pipe profiling, jig assembly<\/td>Splices and supports do not meet on site<\/td>Trial assembly; match-drilled splices<\/td><\/tr>
SRC and composite members<\/th>Steel cores with rebar holes, couplers, studs<\/td>Clash with rebar<\/td>Rebar modelled with the steel<\/td><\/tr>
Baja sekunder<\/th>Roll-formed purlins, girts, bracing<\/td>Short or mixed bundles<\/td>Packing list from the BOM<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Proses<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Ten steps, with the record each one leaves<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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01<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Material<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Certificates matched to plates; heat numbers logged.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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02<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Pemotongan<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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CNC flame or plasma; bevels per WPS.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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03<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Fit-up<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Gaps, alignment and preheat checked before welding. Hold point.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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04<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Pengelasan<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Qualified welders on qualified procedures; weld map kept.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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05<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Correction<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Straightening and heat correction within code limits.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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06<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Pengeboran<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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CNC drilling from the model.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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07<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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NDT<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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At the rate set by the weld grade. Hold point.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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08<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Dimensional check<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Per member, against the shop drawing.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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09<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Blast and coat<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Sa 2\u00bd, then the specified system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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10<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Pack<\/h4>\t\t\t\t<\/div>\n\t\t\t\t
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Marked, bundled and photographed by zone.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tFull inspection and test plan \u2192<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Capabilities<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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Batas fabrikasi<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Limits depend on the base, the crane and the transport route. We confirm them against your drawings before quoting.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t\t\t\t\t\tAsk every supplier:<\/b> at which base will my order be made, and what is the crane capacity in that bay? Group-wide maximums do not tell you what your order gets.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Item<\/th>Batas<\/th><\/tr><\/thead>
Welded H web depth<\/th>200\u20133.000 mm<\/span><\/td><\/tr>
Penampang kolom kotak<\/th>300 \u00d7 300 hingga 1.800 \u00d7 1.800 mm<\/span><\/td><\/tr>
Ketebalan pelat<\/th>6\u2013100 mm<\/span><\/td><\/tr>
Single piece<\/th>Up to 24 m, 60 t<\/span><\/td><\/tr>
Trial assembly length<\/th>Up to 90 m<\/span><\/td><\/tr>
Hole drilling<\/th>\u03a612\u201360 mm, 3D CNC<\/span><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Limits published on the previous website; to be confirmed in writing by the factory before use.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Waktu tunggu<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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When the clock starts, and what moves it<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tThe clock starts at approval\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h4>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tFabrication time counts from approved shop drawings and material on site, not from the order date.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tThick and special plate\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h4>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tZ-grade or high-strength plate can take longer from the mill than standard grades. Typical: 3\u20136 weeks.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\n\t\t\t\t<\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t
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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tRelease by zone\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h4>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tApproving drawings zone by zone lets the first zone start while the rest are still in review.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\t\t\t\n\t\t\t\t\t\t\tCapacity booking\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h4>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t

\n\t\t\t\t\t\tLarge orders are split across bases by member type. We tell you which base makes what.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Changes<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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What a drawing change costs at each stage<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Stage when the change arrives<\/th>Effect<\/th>What we do<\/th><\/tr><\/thead>
Before shop drawings<\/th>Tidak ada<\/td>Included<\/td><\/tr>
During shop drawing review<\/th>Redraw time<\/td>Logged; usually no charge<\/td><\/tr>
After approval, before cutting<\/th>Re-detailing; possible material re-order<\/td>Cost and delay quoted before we proceed<\/td><\/tr>
After cutting or welding<\/th>Scrap or rework<\/td>Cost and delay quoted; your written approval needed<\/td><\/tr>
After shipping<\/th>Site modification<\/td>Site fix procedure and price proposed<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tNothing changes silently.<\/b> Every change gets a number, a cost and a date before work continues.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Subcontracting<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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What we make ourselves, and what we buy in<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Buyers worry that their order will be passed to an unknown workshop. We name every outside supplier in the ITP before production starts.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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