{"id":16828,"date":"2026-06-02T16:52:59","date_gmt":"2026-06-02T08:52:59","guid":{"rendered":"https:\/\/www.fhopepack.com\/zh\/?p=16828"},"modified":"2026-06-02T16:52:59","modified_gmt":"2026-06-02T08:52:59","slug":"steel-tube-bundle-packing-system-for-small-od-pipe","status":"publish","type":"post","link":"https:\/\/www.fhopepack.com\/zh\/steel-tube-bundle-packing-system-for-small-od-pipe\/","title":{"rendered":"steel tube bundle packing system for small OD pipe."},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f Scope<\/h2>\n<iframe width=\"100%\" height=\"420\" src=\"https:\/\/www.youtube.com\/embed\/6AaBhbmk7lg?rel=0\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<p><strong>This checklist applies to the tube stacking conveyor (perpendicular feed, 25 compartments, toothed belt with dividers) and two identical Fhope\u2011ST1500 strapping units (PP strap 12\u00d70.6\u202fmm, heat\u2011seal, rack\u2011and\u2011pinion drive). It covers specification, alignment, and operational checks for tube lengths 1000\u202fmm, 1860\u202fmm, and 3000\u202fmm, and cross\u2011sections \u00d820\u202fmm, \u00d825\u202fmm, and 20\u00d740\u202fmm. The checklist is intended for procurement engineers, plant maintenance teams, and line integrators to prevent costly rework due to misalignment, incorrect tension, or undersized utilities.<\/strong> <em>Business impact: Flawed alignment or tension causes bundle rejects (scrap) and unplanned downtime; correct specification ensures &gt;98% first\u2011pass yield.<\/em><\/p>\n<h2>\ud83c\udfd7\ufe0f Checklist Body<\/h2>\n<iframe width=\"100%\" height=\"420\" src=\"https:\/\/www.youtube.com\/embed\/12wOJVTFekU?rel=0\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe>\n<p>Use these printable check items (mark [x] when verified). Each item references the original Fhope\u2011ST1500 system data.<\/p>\n<h3>Tube Stacking Conveyor<\/h3>\n<ul>\n<li>\n<p>[ ] <strong>1. Conveyor direction<\/strong> is perpendicular to the main line (per original design). <em>Verify: angle = 90\u00b0<\/em>. <em>Business impact: Off\u2011angle feed jams compartments, causing downtime and tube damage.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>2. Belt type<\/strong> is a toothed belt with built\u2011in dividers. <em>Confirm: dividers allow placing 2 tubes per compartment.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Key Point:<\/strong> Number of compartments along the conveyor length = <strong>25 pieces<\/strong> (for accumulation). <em>Business impact: Fewer compartments reduce throughput; incomplete accumulation forces manual intervention.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>3. Tube lengths accepted<\/strong>: 1000\u202fmm, 1860\u202fmm, 3000\u202fmm. <em>Measure sample tubes \u2013 all three lengths must fit correctly.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>4. Tube cross\u2011sections accepted<\/strong>: \u00d820\u202fmm, \u00d825\u202fmm, 20\u00d740\u202fmm. <em>If cross\u2011section is different, the conveyor needs redesign.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>5. Alignment tolerance<\/strong> before strapping: \u00b150\u202fmm (when moving along conveyor). <em>Test with a gauge \u2013 misalignment &gt;\u00b150\u202fmm = fail.<\/em> <em>Business impact: Exceeding tolerance causes strap\u2011off\u2011center and bundle instability, leading to customer rejections.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>6. Worker transfer<\/strong>: manual from container to belt. <em>Check ergonomics \u2013 worker should not have to reach &gt;500\u202fmm horizontally.<\/em> <em>Business impact: Poor ergonomics slow throughput and increase injury risk.<\/em><\/p>\n<\/li>\n<\/ul>\n<h3>Tube Strapping Device (2 units, identical)<\/h3>\n<ul>\n<li>\n<p>[ ] <strong>7. Strap material<\/strong>: PP (polypropylene), <strong>12\u00d70.6\u202fmm<\/strong>. <em>Confirm that only PP strap is used \u2013 switching to PET may damage the heat\u2011seal unit.<\/em> <em>Business impact: Wrong strap material causes seal failures and jams, adding 15%+ to consumable cost.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>8. Strap position<\/strong>: 100\u2013150\u202fmm from each tube edge. <em>Mark the strapping head stroke \u2013 must be adjustable within this range.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Key Point:<\/strong> Strap tension = <strong>100\u2013300\u202fN<\/strong>, adjustable via internal potentiometer. <em>Business impact: Under\u2011tensioned straps loosen in transit; over\u2011tensioned straps crush tubes.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>9. Tension calibration<\/strong>: set to at least 200\u202fN for small\u2011OD bundles (typical). <em>Verify with a tension meter.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>10. Voltage requirements<\/strong>: line voltage = <strong>380\u202fV AC, 60\u202fHz, 3\u2011phase, 5\u2011wire<\/strong>; control voltage = <strong>24\u202fV DC<\/strong>. <em>Measure at incoming power panel.<\/em> <em>Business impact: Incorrect voltage or missing neutral (5\u2011wire) prevents 24\u202fV DC control circuit operation, causing system failure.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>11. Compressed air supply<\/strong>: pressure <strong>6\u201310\u202fbar<\/strong> (8\u202fbar recommended). <em>Check filter\/regulator \u2013 if pressure drops below 6\u202fbar, strapping reliability falls.<\/em> <em>Business impact: Low pressure causes incomplete strap feed and seal, increasing cycle time and reject rate.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>12. Air consumption<\/strong>: not specified in source data; consult supplier for typical value (estimate ~20\u202fL\/cycle for this heat\u2011seal head). <em>Install a flowmeter or request factory data.<\/em> <em>Business impact: Undersized compressor leads to pressure drop and intermittent failures.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>13. Strapping cycle time<\/strong>: <strong>6\u201310\u202fseconds per cycle<\/strong> (with strap feed\/retraction at 2\u202fm\/s, tension speed 3\u20136\u202fm\/min). <em>Time 10 consecutive cycles \u2013 average must be \u226410\u202fs.<\/em> <em>Business impact: Cycle time &gt;10\u202fs reduces line throughput; each second adds ~1.5% cost per bundle.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>14. Belt infeed conveyor<\/strong>: <strong>4 pcs, each 2\u202fm long<\/strong>, total 8\u202fm. <em>Ensure it can hold at least 25 compartments \u00d7 2 tubes = 50 tubes minimum.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>15. Control system<\/strong>: Siemens PLC. <em>Confirm PLC model (e.g., S7\u20111200 or S7\u20111500) and HMI availability.<\/em> <em>Business impact: PLC incompatibility with plant network disrupts data logging and remote diagnostics.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>16. Strapping head movement<\/strong>: electric rack\u2011and\u2011pinion drive on linear bearings. <em>Manually push the head \u2013 it should glide smoothly with no binding.<\/em> <em>(Rack\u2011and\u2011pinion: a rotary motor turns a pinion gear on a linear rack, converting rotation into precise linear motion.)<\/em> <em>Business impact: Binding increases cycle time and causes misaligned strapping.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>17. Load detection sensor<\/strong> present before tensioning. <em>Test by placing a tube \u2013 sensor must trigger.<\/em> <em>Business impact: Missing sensor triggers tensioning on empty head, wasting strap and time.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>18. Manual\/Automatic mode<\/strong> selection via electric control cabinet. <em>Switch between modes \u2013 machine must respond accordingly.<\/em> <em>Business impact: Mode failure locks operator into one state, hindering troubleshooting.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Key Point:<\/strong> Strap coil dimensions: width <strong>160\u202fmm<\/strong>, inner \u00d8 <strong>210\u202fmm<\/strong>, outer \u00d8 <strong>400\u2013500\u202fmm<\/strong>.<\/p>\n<\/li>\n<li>\n<p>[ ] <strong>19. Strap coil compatibility<\/strong>: verify that the strap reel holder fits these dimensions \u2013 otherwise re\u2011spooling is needed. <em>Business impact: Oversized coils jam the holder, causing downtime for respooling.<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>20. Sealing type<\/strong>: <strong>heat sealing<\/strong> (not friction weld). <em>Check heater element temperature \u2013 supplier\u2011specified range, typically 160\u2013200\u202f\u00b0C (verify with supplier).<\/em> <em>(Heat\u2011seal: uses a heated element to melt and fuse PP strap ends under pressure, creating a clean joint.)<\/em> <em>Business impact: Wrong temperature causes weak seals (fail in transit) or burning (strap waste).<\/em><\/p>\n<\/li>\n<li>\n<p>[ ] <strong>21. Net weight<\/strong>: ~300\u202fkg per device. <em>Floor loading must support at least 2 \u00d7 300\u202fkg + conveyor weight.<\/em><\/p>\n<\/li>\n<\/ul>\n<h2>\ud83d\udcc8 Pass\/Fail Criteria<\/h2>\n<table>\n<thead>\n<tr>\n<th>Checklist Item #<\/th>\n<th>Metric \/ Condition<\/th>\n<th>Pass<\/th>\n<th>Fail<\/th>\n<th>Source<\/th>\n<th>Business Outcome<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>Conveyor angle to main line<\/td>\n<td>90\u00b0 \u00b11\u00b0<\/td>\n<td>&gt;1\u00b0 deviation<\/td>\n<td>Original design<\/td>\n<td>Avoids tube jams (downtime)<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>Tube alignment tolerance<\/td>\n<td>\u2264\u00b150\u202fmm<\/td>\n<td>&gt;\u00b150\u202fmm<\/td>\n<td>Original spec<\/td>\n<td>Ensures strap centering (rejects &lt;1%)<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>Strap position from tube edge<\/td>\n<td>100\u2013150\u202fmm<\/td>\n<td>Outside range<\/td>\n<td>ST1500 datasheet<\/td>\n<td>Prevents bundle damage (no edge crushing)<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>Strap tension (adjustable)<\/td>\n<td>100\u2013300\u202fN<\/td>\n<td>Cannot reach min 100\u202fN<\/td>\n<td>ST1500 datasheet<\/td>\n<td>Guarantees secure bundling (transit breakage &lt;0.5%)<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>Line voltage<\/td>\n<td>380\u202fV \u00b110%, 60\u202fHz<\/td>\n<td>Outside 342\u2013418\u202fV; 50\u202fHz<\/td>\n<td>Original spec<\/td>\n<td>Protects control circuit (uptime &gt;98%)<\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td>Compressed air pressure<\/td>\n<td>6\u201310\u202fbar<\/td>\n<td>10\u202fbar<\/td>\n<td>Original spec<\/td>\n<td>Reliable strap feed (cycle time \u226410\u202fs)<\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td>Average cycle time (10 cycles)<\/td>\n<td>\u226410\u202fs<\/td>\n<td>&gt;10\u202fs<\/td>\n<td>ST1500 datasheet<\/td>\n<td>Meets line rate (throughput \u2265360 bundles\/h)<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>Manual\/auto mode switch works<\/td>\n<td>Both modes functional<\/td>\n<td>One mode fails<\/td>\n<td>Test procedure<\/td>\n<td>Enables quick fault recovery (mean\u2011time\u2011to\u2011repair &lt;5\u202fmin)<\/td>\n<\/tr>\n<tr>\n<td>19<\/td>\n<td>Strap coil fits holder<\/td>\n<td>Width 160\u202fmm; ID 200\u2013210\u202fmm; OD \u2264500\u202fmm<\/td>\n<td>Any dimension outside<\/td>\n<td>ST1500 datasheet<\/td>\n<td>Eliminates respooling waste (consumable cost stable)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>If two items fail, the whole system acceptance is <strong>conditional<\/strong> \u2013 require supplier corrective action before payment.<\/p>\n<h2>\ud83d\udee1\ufe0f Commonly Missed Items<\/h2>\n<ul>\n<li>\n<p><strong>Compressed air quality:<\/strong> The original spec requires 6\u201310\u202fbar, but often the facility\u2019s air system is undersized or contains moisture. Install a dedicated filter\/dryer for this line. <strong>Pass criterion:<\/strong> on\u2011tool pressure at 8\u202fbar \u00b10.5\u202fbar under max flow. <em>Business impact: Moisture corrodes heat\u2011seal elements, reducing lifespan by 30%.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Grounding and neutral wire:<\/strong> 3\u2011phase 5\u2011wire means three phases + neutral + ground. Many plants have only 4\u2011wire (no neutral). Verify that the control transformer (24\u202fV DC) requires the neutral. <strong>Pass:<\/strong> continuity check at control cabinet terminal. <em>Business impact: Missing neutral causes 24\u202fV DC loss, stranding the line.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Tube bundle length vs. conveyor compartments:<\/strong> The conveyor has 25 compartments. When stacking 3000\u202fmm tubes, the belt length must be at least 25 \u00d7 (tube OD + gap). Calculate: for \u00d825\u202fmm tubes, 25 \u00d7 28\u202fmm = 700\u202fmm minimum. The actual belt length is not stated, but if it cannot hold all compartments, accumulation fails. <strong>Check:<\/strong> measure belt length ~ see if 25 dividers are present. <em>Business impact: Short belt reduces capacity; only 18 compartments cut throughput by 28%.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Strap tension drift:<\/strong> The potentiometer allows adjustment, but vibration can change tension over time. <strong>Recommend:<\/strong> lock the potentiometer after calibration and mark position. <em>Business impact: Drift &gt;20\u202fN causes loose bundles (customer claims).<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Heat\u2011seal temperature setting:<\/strong> Not specified in source data; request from supplier. Typical PP heat\u2011seal is around 180\u00b0C. <strong>Pass:<\/strong> perform 100 consecutive straps \u2013 zero seal failures. <em>Business impact: Seals break at 50\u202f\u00b0C too low; strap weakens at 220\u202f\u00b0C.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Siemens PLC program version:<\/strong> The control logic may have custom parameters. Confirm that the PLC program is backed up and matches the operating manual. <em>Business impact: Lost program means weeks of reprogramming.<\/em><\/p>\n<\/li>\n<\/ul>\n<h2>\u2699\ufe0f Purchase\u2011decision Checklist<\/h2>\n<p>Before purchasing a <a href=\"https:\/\/www.fhopepack.com\/Steel-tube-strapping-machine\/\">steel tube bundle packing system<\/a>, verify these three items with the supplier:<\/p>\n<ul>\n<li>\n<p><strong>Conveyor compartment capacity:<\/strong> Does the belt length accommodate 25 compartments for your longest tube (3000\u202fmm)? Some suppliers cut corners and provide only 18\u201320 compartments. <em>Business impact: Inadequate compartments reduce line speed, raising per\u2011bundle cost by 15%.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Strapping head compatibility with PP strap only:<\/strong> If you ever plan to use PET or steel strap, the heat\u2011seal unit will not work \u2013 you would need a different machine. <em>Business impact: Switching materials later may require a $5,000+ head replacement.<\/em><\/p>\n<\/li>\n<li>\n<p><strong>Spare parts availability for the Fhope\u2011ST1500:<\/strong> Linear bearings, heater elements, and drive belts. Ask for a recommended spare parts list and lead time. <em>Business impact: Long lead times (\u22654 weeks) can cripple production.<\/em><\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>\ud83d\udee1\ufe0f <strong>Compliance Note<\/strong>: This equipment is designed to meet ISO and CE requirements. Verify with the manufacturer.<\/p>\n<\/blockquote>\n<h2>\ud83d\udee0\ufe0f FAQ<\/h2>\n<p><strong>Q: What is the maximum tube bundle weight the strapping head can handle?<\/strong><br \/>\nA: The original data does not specify a weight limit. Consult your Fhope supplier with actual tube density and bundle count. Based on typical rack\u2011and\u2011pinion drives (rated for 150\u202fN load capacity), estimate \u226415\u202fkg per compartment as a safe starting point.<\/p>\n<p><strong>Q: How often should the heat\u2011seal heater element be replaced?<\/strong><br \/>\nA: Not specified in source data; request from supplier. For PP strap 12\u00d70.6\u202fmm under 200\u202fN tension, typical replacement is ~50,000 cycles (\u22488\u201312 months in three\u2011shift operation). Inspect monthly for wear.<\/p>\n<p><strong>Q: Can the system run with 50\u202fHz power instead of 60\u202fHz?<\/strong><br \/>\nA: The spec mandates 380\u202fV AC, 60\u202fHz. With 50\u202fHz, the strap feed speed (2\u202fm\/s) and tension speed (3\u20136\u202fm\/min) will drop by about 17%, possibly increasing cycle time beyond 10\u202fs. A frequency converter may be required \u2013 consult Fhope. <em>Business impact: Running at 50\u202fHz without converter reduces throughput ~15% and voids warranty.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Scope This checklist applies to the tube stacking conveyor (perpendicular feed, 25 compartments, toothed belt with dividers) and two identical Fhope\u2011ST1500 strapping units (PP strap 12\u00d70.6\u202fmm, heat\u2011seal, rack\u2011and\u2011pinion drive). It covers specification, alignment, and operational checks for tube lengths 1000\u202fmm, 1860\u202fmm, and 3000\u202fmm, and cross\u2011sections \u00d820\u202fmm, \u00d825\u202fmm, and 20\u00d740\u202fmm. The checklist is intended for [&hellip;]<\/p>","protected":false},"author":1,"featured_media":16879,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"","_seopress_titles_desc":"This checklist covers the specification, alignment, and operation of a steel tube bundle packing line for small OD pipe (\u00d820\u201325 mm or 20\u00d740\u202fmm cross\u2011section), focusing on the tube stacking conveyor (perpendicular feed, 25 compartments) and two Fhope\u2011ST1500 strapping devices using PP strap 12\u00d70.6\u202fmm. It is designed for procurement engineers, plant maintenance teams, and line integrators to prevent three common mistakes: mismatch between tube length and conveyor compartments, incorrect strap tension (100\u2013300\u202fN), and insufficient compressed air supply (6\u201310\u202fbar). Every item is measurable against supplied specifications\u2014print this list and take it to the factory floor or supplier negotiation","_seopress_robots_index":"","fifu_image_url":"https:\/\/www.fhopepack.com\/blog\/wp-content\/uploads\/2024\/09\/Steel-Tube-Packing-Line2-1.webp","fifu_image_alt":"","footnotes":""},"categories":[726],"tags":[],"class_list":["post-16828","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-steel-tube-packing-systems"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/posts\/16828","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/comments?post=16828"}],"version-history":[{"count":2,"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/posts\/16828\/revisions"}],"predecessor-version":[{"id":16880,"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/posts\/16828\/revisions\/16880"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/media\/16879"}],"wp:attachment":[{"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/media?parent=16828"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/categories?post=16828"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fhopepack.com\/zh\/wp-json\/wp\/v2\/tags?post=16828"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}